AGREEMENT AND PLAN OF REORGANIZATION
                                          
                                    BY AND AMONG
                                          
                               HEALTHEON CORPORATION,
                                          
                              MEDNET ACQUISITION CORP.
                                          
                                        AND
                                          
                                ACTAMED CORPORATION
                                          
                           DATED AS OF FEBRUARY 24, 1998
                                          

<PAGE>
                                  TABLE OF CONTENTS
                                                                                      PAGE
                                                                                      ----
ARTICLE I  THE MERGER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
    1.1  The Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
    1.2  Effective Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
    1.3  Effect of the Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
    1.4  Articles of Incorporation; Bylaws . . . . . . . . . . . . . . . . . . . . . . . 2
    1.5  Directors and Officers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
    1.6  Maximum Shares to Be Issued; Effect on Capital Stock. . . . . . . . . . . . . . 3
    1.7  Dissenting Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
    1.8  Surrender of Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
    1.9  No Further Ownership Rights in Company Common Stock . . . . . . . . . . . . . . 7
    1.10 Lost, Stolen or Destroyed Certificates. . . . . . . . . . . . . . . . . . . . . 7
    1.11 Tax and Accounting Consequences . . . . . . . . . . . . . . . . . . . . . . . . 7
    1.12 Taking of Necessary Action; Further Action. . . . . . . . . . . . . . . . . . . 7

ARTICLE II  REPRESENTATIONS AND WARRANTIES OF THE COMPANY. . . . . . . . . . . . . . . . 8
    2.1  Organization of the Company . . . . . . . . . . . . . . . . . . . . . . . . . . 8
    2.2  Company Capital Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
    2.3  Subsidiaries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
    2.4  Authority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
    2.5  Financial Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
    2.6  No Undisclosed Liabilities. . . . . . . . . . . . . . . . . . . . . . . . . . .10
    2.7  No Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
    2.8  Tax and Other Returns and Reports . . . . . . . . . . . . . . . . . . . . . . .12
    2.9  Restrictions on Business Activities . . . . . . . . . . . . . . . . . . . . . .14
    2.10 Title to Properties; Absence of Liens and Encumbrances. . . . . . . . . . . . .14
    2.11 Intellectual Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
    2.12 Agreements, Contracts and Commitments . . . . . . . . . . . . . . . . . . . . .16
    2.13 Interested Party Transactions . . . . . . . . . . . . . . . . . . . . . . . . .18
    2.14 Compliance with Laws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
    2.15 Litigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
    2.16 Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
    2.17 Minute Books. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
    2.18 Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
    2.19 Brokers' and Finders' Fees; Third Party Expenses. . . . . . . . . . . . . . . .19
    2.20 Employee Matters and Benefit Plans. . . . . . . . . . . . . . . . . . . . . . .20
    2.21 Accounting and Regulatory Matters . . . . . . . . . . . . . . . . . . . . . . .23
    2.22 Representations Complete. . . . . . . . . . . . . . . . . . . . . . . . . . . .24

ARTICLE III  REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUB . . . . . . . . . .24
    3.1  Organization of Parent and Merger Sub . . . . . . . . . . . . . . . . . . . . .24
    3.2  Parent and Merger Sub Capital Structure . . . . . . . . . . . . . . . . . . . .24


                                             i

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    3.3  Subsidiaries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
    3.4  Authority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
    3.5  Financial Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
    3.6  No Undisclosed Liabilities. . . . . . . . . . . . . . . . . . . . . . . . . . .27
    3.7  No Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
    3.8  Tax and Other Returns and Reports . . . . . . . . . . . . . . . . . . . . . . .29
    3.9  Restrictions on Business Activities . . . . . . . . . . . . . . . . . . . . . .30
    3.10 Title to Properties; Absence of Liens and Encumbrances. . . . . . . . . . . . .30
    3.11 Intellectual Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
    3.12 Agreements, Contracts and Commitments . . . . . . . . . . . . . . . . . . . . .32
    3.13 Interested Party Transactions . . . . . . . . . . . . . . . . . . . . . . . . .33
    3.14 Compliance with Laws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
    3.15 Litigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
    3.16 Insurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
    3.17 Minute Books. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
    3.18 Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
    3.19 Brokers' and Finders' Fees; Third Party Expenses. . . . . . . . . . . . . . . .35
    3.20 Employee Matters and Benefit Plans. . . . . . . . . . . . . . . . . . . . . . .35
    3.21 Accounting and Regulatory Matters . . . . . . . . . . . . . . . . . . . . . . .39
    3.22 Representations Complete. . . . . . . . . . . . . . . . . . . . . . . . . . . .39

ARTICLE IV  CONDUCT PRIOR TO THE EFFECTIVE TIME. . . . . . . . . . . . . . . . . . . . .39
    4.1  Conduct of Business of the Company. . . . . . . . . . . . . . . . . . . . . . .39
    4.2  No Company Solicitation . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
    4.3  No Parent or Merger Sub Solicitation. . . . . . . . . . . . . . . . . . . . . .45

ARTICLE V  ADDITIONAL AGREEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
    5.1  California Permit; Company Shareholder and Parent Stockholder Approvals . . . .46
    5.2  Access to Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
    5.3  Confidentiality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
    5.4  Expenses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
    5.5  Public Disclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
    5.6  Consents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
    5.7  FIRPTA Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
    5.8  Reasonable Efforts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
    5.9  Notification of Certain Matters . . . . . . . . . . . . . . . . . . . . . . . .48
    5.10 Certain Benefit Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
    5.11 Accounting and Tax Treatment. . . . . . . . . . . . . . . . . . . . . . . . . .48
    5.12 Additional Documents and Further Assurances . . . . . . . . . . . . . . . . . .49
    5.13 Company's Auditors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
    5.14 Parent's Auditors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
    5.15 Agreement of Affiliates . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
    5.16 Amendment of Parent Bylaws. . . . . . . . . . . . . . . . . . . . . . . . . . .49
    5.17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49


                                             ii

<PAGE>

ARTICLE VI  CONDITIONS TO THE MERGER . . . . . . . . . . . . . . . . . . . . . . . . . .50
    6.1  Conditions to Obligations of Each Party to Effect the Merger. . . . . . . . . .50
    6.2  Additional Conditions to Obligations of the Company . . . . . . . . . . . . . .52
    6.3  Additional Conditions to the Obligations of Parent and Merger Sub . . . . . . .54

ARTICLE VII  NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES. . . . . . . . . . . . . . .55
    7.1  Non-Survival of Representations and Warranties. . . . . . . . . . . . . . . . .55

ARTICLE VIII  TERMINATION, AMENDMENT AND WAIVER. . . . . . . . . . . . . . . . . . . . .55
    8.1  Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
    8.2  Effect of Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
    8.3  Amendment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
    8.4  Extension; Waiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

ARTICLE IX  GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
    9.1  Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
    9.2  Interpretation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
    9.3  Counterparts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
    9.4  Entire Agreement; Assignment. . . . . . . . . . . . . . . . . . . . . . . . . .58
    9.5  Severability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
    9.6  Other Remedies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
    9.7  Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
    9.8  Rules of Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
    9.9  Specific Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

</TABLE>


                                            iii

<PAGE>

                                  INDEX OF EXHIBITS

<TABLE>

<CAPTION>
EXHIBIT        DESCRIPTION
-------        -----------

<S>            
<C>
EXHIBIT A      Company Schedules

EXHIBIT B      Parent and Merger Sub Schedules

EXHIBIT C      Form of Parent Affiliate Agreement

EXHIBIT D      Form of Voting Agreement

EXHIBIT E      Form of Company Affiliate Agreement

EXHIBIT F      Merger Agreement Schedules 

</TABLE>


                                      iv

<PAGE>

                                  INDEX OF SCHEDULES

<TABLE>

<CAPTION>
SCHEDULE       DESCRIPTION
--------       -----------

<S>            
<C>
4.1(a)         Exceptions to Company Conduct

4.1(b)         Exceptions to Parent Conduct

6.3(j)         Company Required Consents

</TABLE>


                                       v

<PAGE>

                         AGREEMENT AND PLAN OF REORGANIZATION


     This AGREEMENT AND PLAN OF REORGANIZATION (this "AGREEMENT") is made and 
entered into as of February 24, 1998 among Healtheon Corporation, a Delaware 
corporation ("PARENT"), MedNet Acquisition Corp., a Georgia corporation and a 
wholly-owned subsidiary of Parent ("MERGER SUB"), and ActaMed Corporation, a 
Georgia corporation (the "COMPANY"). 


                                       RECITALS

     A.   The Boards of Directors of each of the Company, Parent and Merger 
Sub believe it is in the best interests of each Company and their respective 
shareholders that Parent acquire the Company through the statutory merger of 
Merger Sub with and into the Company (the "MERGER") and, in furtherance 
thereof, have approved the Merger.

     B.   Pursuant to the Merger, among other things, and subject to the 
terms and conditions of this Agreement, all of the issued and outstanding 
shares of capital stock of the Company ("COMPANY CAPITAL STOCK") and all 
outstanding options, warrants or other rights to acquire or receive shares of 
Company Capital Stock shall be converted into the right to receive shares of 
voting Common Stock of Parent ("PARENT COMMON STOCK").

     C.   It is the intention of the parties to this Agreement that the 
Merger for federal income tax purposes shall qualify as a "reorganization" 
within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as 
amended (the "CODE"), and for accounting purposes shall qualify for treatment 
as a pooling of interests.

     D.   The Company, Parent and Merger Sub desire to make certain 
representations and warranties and other agreements in connection with the 
Merger.

     NOW, THEREFORE, in consideration of the covenants, promises and 
representations set forth herein, and for other good and valuable 
consideration, intending to be legally bound hereby the parties agree as 
follows:


                                      ARTICLE I

                                      THE MERGER

     1.1  THE MERGER.  At the Effective Time (as defined in Section 1.2) and 
subject to and upon the terms and conditions of this Agreement and the 
applicable provisions of the Delaware General Corporation Law ("DELAWARE 
LAW") and Georgia Business Corporation Code ("GEORGIA LAW"), Merger Sub shall 
be merged with and into the Company, the separate corporate existence of 
Merger Sub shall cease, and the Company shall continue as the surviving 
corporation and as a wholly-owned subsidiary of Parent.  The Company as the 
surviving corporation after the Merger is hereinafter sometimes referred to 
as the "SURVIVING CORPORATION."  The Merger shall be consummated


<PAGE>

pursuant to the terms of this Agreement, which has been approved and adopted 
by the respective Boards of Directors of the Company, Merger Sub and Parent, 
and by Parent, as the sole shareholder of Merger Sub.

     1.2  EFFECTIVE TIME.  Unless this Agreement is earlier terminated 
pursuant to Section 8.1, the closing of the Merger (the "CLOSING") will take 
place as promptly as practicable, but no later than five (5) business days, 
following satisfaction or waiver of the conditions set forth in Article VI, 
at the offices of Wilson Sonsini Goodrich & Rosati ("WSGR"), 650 Page Mill 
Road, Palo Alto, California, unless another place or time is agreed to by 
Parent and the Company. The date upon which the Closing actually occurs is 
herein referred to as the "CLOSING DATE."  On the Closing Date, the parties 
hereto shall cause the Merger to be consummated by filing the Articles of 
Merger (or like instrument) with the Secretary of State of the State of 
Georgia (the "CERTIFICATE OF MERGER"), in accordance with the relevant 
provisions of applicable law (the time of acceptance by the Secretary of 
State of Georgia of such filing being referred to herein as the "EFFECTIVE 
TIME").  The parties currently intend that the Closing Date will occur on or 
prior to May 15, 1998.

     1.3  EFFECT OF THE MERGER.  At the Effective Time, the effect of the 
Merger shall be as provided in the applicable provisions of Georgia Law.  
Without limiting the generality of the foregoing, and subject thereto, at the 
Effective Time, all the property, rights, privileges, powers and franchises 
of the Company and Merger Sub shall vest in the Surviving Corporation, and 
all debts, liabilities and duties of the Company and Merger Sub shall become 
the debts, liabilities and duties of the Surviving Corporation.

     1.4  ARTICLES OF INCORPORATION; BYLAWS.

          (a)  Unless otherwise determined by Parent prior to the Effective 
Time, at the Effective Time, the Articles of Incorporation of Merger Sub 
shall be the Articles of Incorporation of the Surviving Corporation until 
thereafter amended as provided by law and such Articles of Incorporation; 
provided, however, that Article I of the Articles of Incorporation of the 
Surviving Corporation shall be amended to read as follows:  "The name of the 
corporation is ActaMed Corporation."

          (b)  Unless otherwise determined by Parent, the Bylaws of the 
Merger Sub, as in effect immediately prior to the Effective Time, shall be 
the Bylaws of the Surviving Corporation until thereafter amended.

     1.5  DIRECTORS AND OFFICERS.  As promptly as practicable following the 
Effective Time, unless otherwise unanimously agreed to by Parent's Board of 
Directors, the board of directors of Merger Sub shall be comprised of an 
equal number of representatives from each of the Company and of Parent, each 
to hold office in accordance with the Articles of Incorporation and Bylaws of 
the Surviving Corporation.  The officers of Merger Sub immediately prior to 
the Effective Time shall be the initial officers of the Surviving 
Corporation, each to hold office in accordance with the Bylaws of the 
Surviving Corporation.


                                       2

<PAGE>

     1.6  MAXIMUM SHARES TO BE ISSUED; EFFECT ON CAPITAL STOCK.  The maximum 
number of shares of Parent Common Stock to be issued (including Parent Common 
Stock to be reserved for issuance upon exercise of any of the Company's stock 
options or other securities convertible into, exchangeable for or exercisable 
for Company Capital Stock to be assumed by Parent) in exchange for the 
acquisition by Parent of all outstanding Company Capital Stock and all 
unexpired and unexercised options, warrants or other rights to acquire 
Company Capital Stock shall be the Aggregate Share Number (as defined in 
Section 1.6(g)(iii)). No adjustment shall be made in the number of shares of 
Parent Common Stock issued in the Merger as a result of any cash proceeds 
received by the Company from the date hereof to the Effective Time pursuant 
to the exercise of options, warrants or other rights to acquire Company 
Capital Stock.  Subject to the terms and conditions of this Agreement, as of 
the Effective Time, by virtue of the Merger and without any action on the 
part of Merger Sub, the Company or the holder of any shares of the Company 
Capital Stock, the following shall occur:

          (a)  CONVERSION OF COMPANY COMMON STOCK.  Each share of Company 
Capital Stock (including any shares of Common Stock of the Company ("COMPANY 
COMMON STOCK") issued upon conversion of Preferred Stock of the Company 
("COMPANY PREFERRED STOCK") and upon exercise, conversion or exchange of all 
other outstanding securities immediately prior to the Closing) issued and 
outstanding immediately prior to the Effective Time (other than any shares of 
Company Capital Stock to be canceled pursuant to Section 1.6(b) and any 
Dissenting Shares (as defined and to the extent provided in Section 1.7(a)) 
will be canceled and extinguished and be converted automatically into the 
right to receive that number of shares of Parent Common Stock equal to the 
Exchange Ratio (as defined in Section 1.6(g)(iv) below), upon surrender of 
the certificate representing such share of Company Common Stock in the manner 
provided in Section 1.8.

          (b)  CANCELLATION OF PARENT-OWNED AND COMPANY-OWNED STOCK.  Each 
share of Company Capital Stock owned by Merger Sub, Parent, the Company or 
any direct or indirect wholly-owned subsidiary of Parent or the Company 
immediately prior to the Effective Time shall be canceled and extinguished 
without any conversion thereof.

          (c)  STOCK OPTIONS.  At the Effective Time, all options to purchase 
Company Common Stock then outstanding under the Company's Option Plans or 
otherwise shall be assumed by Parent in accordance with provisions described 
below.  "Option Plans" means collectively the Company's 1997 Stock Option 
Plan, 1996 Stock Option Plan, 1996 Directors Stock Option Plan, 1995 Stock 
Option Plan, 1994 Stock Option Plan, 1993 Stock Option Plan and 1992 Stock 
Option Plan.

               (i)  At the Effective Time, each outstanding option and 
warrant to purchase shares of Company Common Stock (each a "COMPANY OPTION") 
under the Option Plans or otherwise, whether vested or unvested, shall be, in 
connection with the Merger, assumed by Parent.  Each Company Option so 
assumed by Parent under this Agreement shall continue to have, and be subject 
to, the same terms and conditions set forth in the Option Plans and/or as 
provided in the


                                       3

<PAGE>

respective option agreements governing such Company Option immediately prior 
to the Effective Time, except that (A) such Company Option shall be 
exercisable for that number of whole shares of Parent Common Stock equal to 
the product of the number of shares of Company Common Stock that were 
issuable upon exercise of such Company Option immediately prior to the 
Effective Time multiplied by the Exchange Ratio, rounded down (in the case of 
Company Options granted under the Option Plan) to the nearest whole number of 
shares of Parent Common Stock, (B) the per share exercise price for the 
shares of Parent Common Stock issuable upon exercise of such assumed Company 
Option shall be equal to the quotient determined by dividing the exercise 
price per share of Company Common Stock at which such Company Option was 
exercisable immediately prior to the Effective Time by the Exchange Ratio, 
rounded up to the nearest whole cent, and (C) Parent and its Board of 
Directors shall be substituted for the Company and the Committee of the 
Company's Board of Directors (including, if applicable, the entire Board of 
Directors of the Company) administering such Company Stock Plan.

               (ii) Promptly following the Effective Time, Parent will issue 
to each holder of an outstanding Company Option a document evidencing the 
foregoing assumption of such Company Option by Parent.  At or prior to the 
Effective Time, Parent shall take all corporate action necessary to reserve 
for issuance sufficient shares of Parent Common Stock for delivery upon 
exercise of Company Options assumed by it in accordance with this Section 1.6.

          (d)  CAPITAL STOCK OF MERGER SUB.  Each share of Common Stock of 
Merger Sub issued and outstanding immediately prior to the Effective Time 
shall be converted into and exchanged for one validly issued, fully paid and 
nonassessable share of Common Stock of the Surviving Corporation.  Each stock 
certificate of Merger Sub evidencing ownership of any such shares shall 
continue to evidence ownership of such shares of capital stock of the 
Surviving Corporation.

          (e)  ADJUSTMENTS TO EXCHANGE RATIO.  The Exchange Ratio shall be 
equitably adjusted to reflect fully the effect of any stock split, reverse 
split, stock dividend (including any dividend or distribution of securities 
convertible into Parent Common Stock or Company Capital Stock), 
reorganization, recapitalization or other like change with respect to Parent 
Common Stock or Company Capital Stock occurring after the date hereof and 
prior to the Effective Time.  Any such change for which a record date is 
established shall be deemed for the purposes of this Section 1.6(e) to have 
occurred on the record date.

          (f)  FRACTIONAL SHARES.  No fraction of a share of Parent Common 
Stock will be issued.

          (g)  DEFINITIONS.

               (i)  COMPANY FULLY DILUTED CAPITALIZATION NUMBER.  The 
"Company Fully-Diluted Capitalization Number" shall mean all of the issued 
and outstanding shares of the Company Common Stock as of the Effective Time 
calculated on a fully-diluted basis as if all outstanding convertible 
securities had been fully converted and all outstanding warrants, options and 
other rights


                                       4

<PAGE>

for the purchase of shares of Company Common Stock or convertible securities 
had been fully exercised immediately prior to such issuance (and the 
resulting securities fully converted into Company Common Stock, if so 
convertible) as of such date.

               (ii)  PARENT FULLY-DILUTED CAPITALIZATION NUMBER.  The "Parent 
Fully-Diluted Capitalization Number" shall mean all of the issued and 
outstanding shares of Parent Common Stock as of the Effective Time calculated 
on a fully-diluted basis as if all outstanding convertible securities had 
been fully converted and all outstanding warrants, options and other rights 
for the purchase of shares of Parent Common Stock or convertible securities 
had been fully exercised immediately prior to such issuance (and the 
resulting securities fully converted into Parent Common Stock, if so 
convertible) as of such date.

               (iii) AGGREGATE SHARE NUMBER.  The "Aggregate Share Number" 
shall mean the number of shares of Parent Common Stock equal to (a) the 
Parent Fully Diluted Capitalization Number multiplied by (b) 44.68 divided by 
(c) 55.32.

               (iv)  EXCHANGE RATIO.  The "Exchange Ratio" shall mean the 
quotient obtained by dividing (x) the Aggregate Share Number by (y) the 
Company Fully Diluted Capitalization Number.

     1.7  DISSENTING SHARES.

          (a)  Notwithstanding any provision of this Agreement to the 
contrary, any shares of Company Capital Stock held by a holder who has 
demanded and perfected dissenters' rights for such shares in accordance with 
Georgia Law and who, as of the Effective Time, has not effectively withdrawn 
or lost such dissenters' rights ("DISSENTING SHARES") shall not be converted 
into or represent a right to receive Parent Common Stock pursuant to Section 
1.6, but the holder thereof shall only be entitled to receive payment in cash 
for the fair value of such holder's shares as determined pursuant to the 
applicable provisions of Georgia Law; provided, that no such payment shall be 
made to any dissenting shareholder unless and until such dissenting 
shareholder has complied with the applicable provisions of Georgia Law and 
surrendered to the Company the certificate or certificates representing the 
Dissenting Shares.

          (b)  Notwithstanding the provisions of subsection (a), if any 
holder of shares of Company Capital Stock who demands appraisal of such 
shares under Georgia Law shall effectively withdraw or lose (through failure 
to perfect or otherwise) the right to appraisal, then, as of the later of the 
Effective Time and the occurrence of such event, such holder's shares shall 
automatically be converted into and represent only the right to receive 
Parent Common Stock as provided in Section 1.6, without interest thereon, 
upon surrender of the certificate representing such shares.

          (c)  The Company shall give Parent (i) prompt notice of any written 
notice by any shareholder of intent to demand payment for such shareholder's 
shares of Company Capital Stock,


                                       5

<PAGE>

withdrawals of such demands, and any other instruments served pursuant to 
Georgia Law and received by the Company and (ii) the opportunity to 
participate in all negotiations and proceedings with respect to demands for 
dissenters' rights under Georgia Law.  The Company shall not, except with the 
prior written consent of Parent, voluntarily make any payment with respect to 
any demands for dissenters' rights or offer to settle or settle any such 
demands.

     1.8  SURRENDER OF CERTIFICATES.

          (a)  EXCHANGE AGENT.  WSGR shall serve as the exchange agent (the 
"EXCHANGE AGENT") in the Merger.

          (b)  PARENT TO PROVIDE COMMON STOCK.  Immediately prior to the 
Effective Time, Parent shall make available to the Exchange Agent for 
exchange in accordance with this Article I, certificates representing the 
aggregate number of shares of Parent Common Stock issuable pursuant to 
Section 1.6 in exchange for outstanding shares of Company Capital Stock.  

          (c)  EXCHANGE PROCEDURES.  Promptly after the Effective Time, the 
Surviving Corporation shall cause to be mailed to each holder of record of a 
certificate or certificates (the "CERTIFICATES") which immediately prior to 
the Effective Time represented outstanding shares of Company Capital Stock 
and which shares were converted into the right to receive shares of Parent 
Common Stock pursuant to Section 1.6, (i) a letter of transmittal (which 
shall specify that delivery shall be effected, and risk of loss and title to 
the Certificates shall pass, only upon delivery of the Certificates to the 
Exchange Agent and shall be in such form and have such other provisions as 
Parent may reasonably specify) and (ii) instructions for use in effecting the 
surrender of the Certificates in exchange for certificates representing 
shares of Parent Common Stock.  Upon surrender of a Certificate for 
cancellation to the Exchange Agent or to such other agent or agents as may be 
appointed by Parent, together with such letter of transmittal, duly completed 
and validly executed in accordance with the instructions thereto, the holder 
of such Certificate shall be entitled to receive in exchange therefor a 
certificate representing the number of whole shares of Parent Common Stock, 
to which such holder is entitled pursuant to Section 1.6, and the Certificate 
so surrendered shall forthwith be canceled and the holder thereof shall no 
longer have any rights with respect to such Certificate.  Until so 
surrendered, each outstanding Certificate that, prior to the Effective Time, 
represented shares of Company Capital Stock will be deemed from and after the 
Effective Time, for all corporate purposes, other than the payment of 
dividends, to evidence the ownership of the number of full shares of Parent 
Common Stock into which such shares of Company Capital Stock shall have been 
so converted.

          (d)  DISTRIBUTIONS WITH RESPECT TO UNEXCHANGED SHARES.  No 
dividends or other distributions with respect to Parent Common Stock declared 
or made after the Effective Time and with a record date after the Effective 
Time will be paid to the holder of any unsurrendered Certificate with respect 
to the shares of Parent Common Stock represented thereby until the holder of 
record of such Certificate shall surrender such Certificate.  Subject to 
applicable law, following surrender of any such Certificate, there shall be 
paid to the record holder of the certificates representing whole


                                       6

<PAGE>

shares of Parent Common Stock issued in exchange therefor, without interest, 
at the time of such surrender, the amount of dividends or other distributions 
with a record date after the Effective Time theretofore payable with respect 
to such whole shares of Parent Common Stock.

          (e)  TRANSFERS OF OWNERSHIP.  If any certificate for shares of 
Parent Common Stock is to be issued in a name other than that in which the 
Certificate surrendered in exchange therefor is registered, it will be a 
condition of the issuance thereof that the Certificate so surrendered will be 
properly endorsed and otherwise in proper form for transfer and that the 
person requesting such exchange will have paid to Parent or any agent 
designated by it any transfer or other taxes required by reason of the 
issuance of a certificate for shares of Parent Common Stock in any name other 
than that of the registered holder of the Certificate surrendered, or 
established to the satisfaction of Parent or any agent designated by it that 
such tax has been paid or is not payable.

          (f)  NO LIABILITY.  Notwithstanding anything to the contrary in 
this Section 1.8, none of the Exchange Agent, the Surviving Corporation or 
any party hereto shall be liable to a holder of shares of Parent Common Stock 
or Company Capital Stock for any amount properly paid to a public official 
pursuant to any applicable abandoned property, escheat or similar law.

     1.9  NO FURTHER OWNERSHIP RIGHTS IN COMPANY COMMON STOCK.  All shares of 
Parent Common Stock issued upon the surrender for exchange of shares of 
Company Capital Stock in accordance with the terms hereof (including any cash 
paid in respect thereof) shall be deemed to have been issued in full 
satisfaction of all rights pertaining to such shares of Company Capital 
Stock, and there shall be no further registration of transfers on the records 
of the Surviving Corporation of shares of Company Capital Stock which were 
outstanding immediately prior to the Effective Time.  If, after the Effective 
Time, Certificates are presented to the Surviving Corporation for any reason, 
they shall be canceled and exchanged as provided in this Article I.

     1.10 LOST, STOLEN OR DESTROYED CERTIFICATES.  In the event any 
Certificates evidencing shares of Company Capital Stock shall have been lost, 
stolen or destroyed, the Exchange Agent shall issue in exchange for such 
lost, stolen or destroyed Certificates, upon the making of an affidavit of 
that fact by the holder thereof, such shares of Parent Common Stock as may be 
required pursuant to Section 1.6; provided, however, that Parent may, in its 
discretion and as a condition precedent to the issuance thereof, require the 
owner of such lost, stolen or destroyed Certificates to deliver a bond in 
such sum as it may reasonably direct as indemnity against any claim that may 
be made against Parent or the Exchange Agent with respect to the Certificates 
alleged to have been lost, stolen or destroyed.

     1.11 TAX AND ACCOUNTING CONSEQUENCES.  It is intended by the parties 
hereto that the Merger shall (i) constitute a reorganization within the 
meaning of Section 368 of the Code and (ii) qualify for accounting treatment 
as a pooling of interests.

     1.12 TAKING OF NECESSARY ACTION; FURTHER ACTION.  If, at any time after 
the Effective Time, any such further action is necessary or desirable to 
carry out the purposes of this Agreement and to


                                       7

<PAGE>

vest the Surviving Corporation with full right, title and possession to all 
assets, property, rights, privileges, powers and franchises of the Company 
and Merger Sub, the officers and directors of the Company and Merger Sub are 
fully authorized in the name of their respective corporations or otherwise to 
take, and will take, all such lawful and necessary action.


                                      ARTICLE II

                    REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company hereby represents and warrants to Parent and Merger Sub, 
subject to such exceptions as are specifically disclosed in the disclosure 
schedules (referencing the appropriate section number or subsection, as the 
case may be) supplied by the Company to Parent attached hereto as EXHIBIT A 
(the "COMPANY SCHEDULES") and dated as of the date hereof, as follows:

     2.1  ORGANIZATION OF THE COMPANY.  The Company is a corporation duly 
organized, validly existing and in good standing under the laws of the State 
of Georgia.  The Company has the corporate power to own its properties and to 
carry on its business as now being conducted.  The Company is duly qualified 
to do business and in good standing as a foreign corporation in each 
jurisdiction in which the failure to be so qualified would have a material 
adverse effect on the business, assets (including intangible assets), 
financial condition or results of operations of the Company (hereinafter 
referred to as a "COMPANY MATERIAL ADVERSE EFFECT").  The Company has 
delivered a true and correct copy of its Articles of Incorporation and 
Bylaws, each as amended to date, to Parent.

     2.2  COMPANY CAPITAL STRUCTURE.

          (a)  The authorized capital stock of the Company consists of 
50,000,000 shares of authorized Common Stock, of which 9,384,200 shares are 
issued and outstanding; 8,800,880 shares of authorized Series A Preferred 
Stock, all of which are issued and outstanding; 3,448,276 shares of 
authorized Series B Preferred Stock, all of which are issued and outstanding; 
10,344,828 shares of authorized Series C Preferred Stock, all of which are 
issued and outstanding; and 7,043,478 shares of authorized Series D Preferred 
Stock, of which 3,695,652 are issued and outstanding and the balance of which 
may be issued pursuant to the Asset Purchase Agreement between the Company 
and SmithKline Beecham Clinical Laboratories, Inc. ("SBCL") dated as of 
December 31, 1997 (the "SBCL ASSETS PURCHASE AGREEMENT").  The Company 
Capital Stock is held of record by the persons, with the addresses of record 
and in the amounts set forth on Schedule 2.2(a).  All outstanding shares of 
Company Capital Stock are duly authorized, validly issued, fully paid and 
non-assessable and not subject to preemptive rights created by statute, the 
Articles of Incorporation or Bylaws of the Company or any agreement to which 
the Company is a party or by which it is bound.

          (b)  The Company has reserved 6,061,238 shares of Common Stock for 
issuance to directors, employees and consultants pursuant to the Option 
Plans, of which 5,173,615 shares are


                                       8

<PAGE>

subject to outstanding, unexercised options and 887,623 shares remain 
available for future grant. The Company has reserved 30,087,912 shares of 
Common Stock for issuance upon the conversion, exercise or exchange of any 
outstanding securities and 450,450 shares subject to a warrant issued to IBM 
(each referred to herein as a "COMPANY CONVERTIBLE SECURITY"). All of the 
Company Convertible Securities and Company Options have been duly authorized 
and validly issued, as applicable, in accordance with the applicable terms of 
the Option Plans and Blue Sky laws.  Schedule 2.2(b) sets forth for each 
outstanding Company Option or Company Convertible Security the name of the 
holder of such option or Company Convertible Security, the domicile address 
of such holder, the number of shares of Common Stock subject to such option 
or Company Convertible Security, the exercise price of such option or Company 
Convertible Security and the vesting schedule for such option or Company 
Convertible Security, including the extent vested to date and whether the 
exercisability of such option or Company Convertible Security will be 
accelerated and become exercisable by reason of the transactions contemplated 
by this Agreement.  Except for the Company Options and Company Convertible 
Securities described in Schedule 2.2(b), there are no options, warrants, 
calls, rights, commitments or agreements of any character, written or oral, 
to which the Company is a party or by which it is bound obligating the 
Company to issue, deliver, sell, repurchase or redeem, or cause to be issued, 
delivered, sold, repurchased or redeemed, any shares of the capital stock of 
the Company or obligating the Company to grant, extend, accelerate the 
vesting of, change the price of, otherwise amend or enter into any such 
option, warrant, call, right, commitment or agreement.  The holders of 
Company Options and Company Convertible Securities have been or will be 
given, or shall have properly waived, any required notice prior to the 
Merger, and all such rights will be terminated at or prior to the Effective 
Time.  As a result of the Merger, Parent will be the record and sole 
beneficial owner of all capital stock of the Company and rights to acquire or 
receive such capital stock.

     2.3  SUBSIDIARIES.  The Company does not have and has never had any 
subsidiaries and does not otherwise own and has never otherwise owned any 
shares of capital stock or any interest in, or control, directly or 
indirectly, any other corporation, partnership, limited liability company, 
association, joint venture or other business entity.

     2.4  AUTHORITY.  Subject only to the requisite approval of the Merger 
and this Agreement by the Company's shareholders, the Company has all 
requisite corporate power and authority to enter into this Agreement and to 
consummate the transactions contemplated hereby.  The vote required of the 
Company's shareholders to duly approve the Merger and this Agreement is set 
forth on Schedule 2.4. The execution and delivery of this Agreement and the 
consummation of the transactions contemplated hereby have been duly 
authorized by all necessary corporate action on the part of the Company, 
subject only to the approval of the Merger by the Company's shareholders.  
The Company's Board of Directors has unanimously approved the Merger and this 
Agreement.  This Agreement has been duly executed and delivered by the 
Company and constitutes the valid and binding obligation of the Company, 
enforceable in accordance with its terms (except in all cases as such 
enforceability may be limited by applicable bankruptcy, insolvency, 
reorganization, receivership, conservatorship, moratorium, or similar Laws 
affecting the enforcement of creditors' rights generally and except that the 
availability of the equitable remedy of specific performance or


                                       9

<PAGE>

injunctive relief is subject to the discretion of the court before which any 
proceeding may be brought).  Except as set forth on Schedule 2.4, subject 
only to the approval of the Merger and this Agreement by the Company's 
shareholders, the execution and delivery of this Agreement by the Company 
does not, and, as of the Effective Time, the consummation of the transactions 
contemplated hereby will not, conflict with, or result in any violation of, 
or default under (with or without notice or lapse of time, or both), or give 
rise to a right of termination, cancellation or acceleration of any 
obligation or loss of any benefit under (any such event, a "COMPANY 
CONFLICT") (i) any provision of the Articles of Incorporation or Bylaws of 
the Company or (ii) any mortgage, indenture, lease, contract or other 
agreement or instrument, permit, concession, franchise, license, judgment, 
order, decree, statute, law, ordinance, rule or regulation applicable to the 
Company or its properties or assets.  No consent, waiver, approval, order or 
authorization of, or registration, declaration or filing with, any court, 
administrative agency or commission or other federal, state, county, local or 
foreign governmental authority, instrumentality, agency or commission 
("GOVERNMENTAL ENTITY") or any third party (so as not to trigger any Company 
Conflict) is required by or with respect to the Company in connection with 
the execution and delivery of this Agreement or the consummation of the 
transactions contemplated hereby, except for (i) the filing of the Agreement 
of Merger with the Georgia Secretary of State, (ii) such consents, waivers, 
approvals, orders, authorizations, registrations, declarations and filings as 
may be required under applicable federal and state securities laws (iii) such 
notices or filings with the Internal Revenue Service or the Pension Benefit 
Guaranty Corporation with respect to any employee benefit plans or under the 
HSR Act, and (iv) such other consents, waivers, authorizations, filings, 
approvals and registrations which are set forth on Schedule 2.4.

     2.5  FINANCIAL STATEMENTS.  Schedule 2.5 sets forth the Company's 
unaudited balance sheet as of December 31, 1997, and the related unaudited 
statement of operations for the twelve month period ended December 31, 1997 
(the "COMPANY UNAUDITED FINANCIALS"), and the audited balance sheet as of 
December 31, 1996, and the related audited statement of operations for the 
twelve-month period ended December 31, 1996 (the "COMPANY AUDITED 
FINANCIALS") (collectively, such financial statements are sometimes referred 
to herein as "COMPANY FINANCIAL STATEMENTS").  The Company Unaudited 
Financials and the Company Audited Financials have been prepared in 
accordance with GAAP applied on a basis consistent throughout the periods 
indicated and consistent with each other (except that the Company Unaudited 
Financials do not contain all the notes that may be required by GAAP, and may 
require subsequent reclassification for proper recording of the accounting 
treatment of the acquisition of the SBCL SCAN business.  As of the date 
hereof, the final accounting treatment of that transaction has not been 
determined).  The Company Unaudited Financials and Company Audited Financials 
present fairly the financial condition, operating results and, in the case of 
Company Audited Financials only, the cash flows of the Company as of the 
dates and during the periods indicated therein, subject in the case of the 
Company Unaudited Financials, to normal year-end adjustments, which will not 
be material in amount or significance except for the effects of 
reclassification that may be required by the final accounting treatment of 
the SBCL SCAN acquisition.  The Company's unaudited balance sheet dated as of 
December 31, 1997, shall be referred to as the "COMPANY CURRENT BALANCE 
SHEET".


                                      10

<PAGE>

     2.6  NO UNDISCLOSED LIABILITIES.  Except as set forth in Schedule 2.6, 
the Company does not have any liability, indebtedness, obligation, expense, 
claim, deficiency, guaranty or endorsement of any type,  whether accrued, 
absolute, contingent, matured, unmatured or other (whether or not required to 
be reflected in financial statements in accordance with generally accepted 
accounting principles), which individually or in the aggregate, (i) has not 
been reflected in the Company Current Balance Sheet, or (ii) has not arisen 
in the ordinary course of the Company's business since the date of the 
Company Current Balance Sheet, consistent with past practices.

     2.7  NO CHANGES.  Except as set forth in Schedule 2.7, since the date of 
the Company Current Balance Sheet, there has not been, occurred or arisen any:

          (a)  transaction by the Company except in the ordinary course of 
business as conducted as of the date of the Company Current Balance Sheet and 
consistent with past practices;

          (b)  amendments or changes to the Articles of Incorporation or 
Bylaws of the Company;

          (c)  capital expenditure or commitment by the Company, either 
individually or in the aggregate, exceeding $25,000;

          (d)  destruction of, damage to or loss of any material assets, 
business or customer of the Company (whether or not covered by insurance);

          (e)  labor trouble or claim of wrongful discharge or other unlawful 
labor practice or action;

          (f)  change in accounting methods or practices (including any 
change in depreciation or amortization policies or rates) by the Company;

          (g)  revaluation by the Company of any of its assets (other than as 
may be required by the final accounting of the SBCL SCAN business);

          (h)  declaration, setting aside or payment of a dividend or other 
distribution with respect to the capital stock of the Company, or any direct 
or indirect redemption, purchase or other acquisition by the Company of any 
of its capital stock;

          (i)  increase in the salary or other compensation payable or to 
become payable to any of its officers, directors, employees or advisors, or 
the declaration, payment or commitment or obligation of any kind for the 
payment of a bonus or other additional salary or compensation to any such 
person except as otherwise contemplated by this Agreement or in the ordinary 
course of business and consistent with past practices and Schedule 2.7(i) 
lists all salary increases in excess of 10% and any bonus or other 
compensation arrangement exceeding $10,000;


                                      11

<PAGE>

          (j)  sale, lease, license or other disposition of any of the assets 
or properties of the Company, except in the ordinary course of business and 
consistent with past practices;

          (k)  material amendment or termination of any material contract, 
agreement or license to which the Company is a party or by which it is bound;

          (l)  loan by the Company to any person or entity, incurring by the 
Company of any indebtedness, guaranteeing by the Company of any indebtedness, 
issuance or sale of any debt securities of the Company or guaranteeing of any 
debt securities of others, except for advances to employees for travel and 
business expenses in the ordinary course of business, consistent with past 
practices;

          (m)  waiver or release of any right or claim of the Company, 
including any write-off or other compromise of any account receivable of the 
Company;

          (n)  commencement or notice or threat of commencement of any 
lawsuit or proceeding against or investigation of the Company or its affairs;

          (o)  notice of any claim of ownership by a third party of the 
Company's Intellectual Property (as defined in Section 2.11 below) or of 
infringement by the Company of any third party's Intellectual Property rights;

          (p)  issuance or sale by the Company of any of its shares of 
capital stock, or securities exchangeable, convertible or exercisable 
therefor, or of any other of its securities;

          (q)  change in pricing or royalties set or charged by the Company 
to its customers or licensees or in pricing or royalties set or charged by 
persons who have licensed Intellectual Property to the Company;

          (r)  event or condition of any character that has or could be 
reasonably expected to have a Company Material Adverse Effect on the Company; 
or

          (s)  negotiation or agreement by the Company or any officer or 
employees thereof to do any of the things described in the preceding clauses 
(a) through (r) (other than negotiations with Parent and its representatives 
regarding the transactions contemplated by this Agreement).

     2.8  TAX AND OTHER RETURNS AND REPORTS.

          (a)  DEFINITIONS.  

               (i)  "TAX" or, collectively, "TAXES", means any and all 
federal, state, local and foreign taxes, assessments and other governmental 
charges, duties, impositions and liabilities, including taxes based upon or 
measured by gross receipts, income, profits, sales, use and occupation,


                                      12

<PAGE>

and value added, ad valorem, transfer, franchise, withholding, payroll, 
recapture, employment, excise and property taxes, together with all interest, 
penalties and additions imposed with respect to such amounts and any 
obligations under any agreements or arrangements with any other person with 
respect to such amounts and including any liability for taxes of a 
predecessor entity.

               (ii)  "KNOWLEDGE" as used herein shall mean the personal 
knowledge (including references to such person being aware of a particular 
matter), after reasonable inquiry, of, (a) in the case of the Company, P.E. 
Sadler, Michael K. Hoover, Lew Belote, Nancy J. Ham, J. Philip Hardin, J.R. 
Hughes and (to the extent not already identified in the foregoing list) all 
directors of the Company on the date of this Agreement, and (b) in the case 
of Parent, Jim Clark, W. Michael Long, Kallen Chan, Pavan Nigam, Dennis 
Drislane, Chuck Saunders, Denise M. Shea, Ron Alvarez and (to the extent not 
already identified in the foregoing list) all directors of Parent on the date 
of this Agreement.

          (b)  TAX RETURNS AND AUDITS.  Except as set forth in Schedule 2.8:

               (i)   The Company as of the Effective Time will have prepared 
and filed all required federal, state, local and foreign returns, estimates, 
information statements and reports ("RETURNS") due on or before the Effective 
Time relating to any and all Taxes concerning or attributable to the Company 
or its operations and such Returns are or will be prior to filing true and 
correct in all material respects and have been completed in accordance with 
applicable law.

               (ii)  The Company as of the Effective Time:  (A) will have 
paid (if due on or before the Effective Time) or accrued on the Company 
Current Balance Sheet all Taxes it is required to pay, or which are 
attributable to the period ending December 31, 1997 and (B) will have 
withheld with respect to its employees all federal and state income taxes, 
FICA, FUTA and other Taxes required to be withheld.

               (iii) The Company has not been delinquent in the payment of 
any Tax nor is there any Tax deficiency outstanding, assessed, or to its 
Knowledge proposed against the Company, nor has the Company executed any 
waiver of any statute of limitations on or extending the period for the 
assessment or collection of any Tax.

               (iv)  No audit or other examination of any Return of the 
Company is currently in progress, nor has the Company been notified of any 
request for such an audit or other examination.

               (v)   The Company does not have any liabilities for unpaid 
federal, state, local and foreign Taxes which have not been accrued or 
reserved for in accordance with GAAP on the Company Current Balance Sheet, 
whether asserted or unasserted, contingent or otherwise, and the Company has 
no Knowledge of any basis for the assertion of any such liability 
attributable to the Company, its assets or operations.


                                      13

<PAGE>

               (vi)   The Company has provided to Parent or has made 
available to representatives of Parent for inspection copies of all federal 
and state income and all state sales and use Tax Returns for all periods 
since the date of Company's incorporation.

               (vii)  There are (and as of immediately following the 
Effective Date there will be) no liens, pledges, charges, claims, security 
interests or other encumbrances of any sort on the assets ("LIENS") of the 
Company relating to or attributable to Taxes.

               (viii) The Company has no Knowledge of any basis for the 
assertion of any claim relating or attributable to Taxes which, if adversely 
determined, would result in any Lien on the Company.

               (ix)   None of the Company's assets are treated as "tax-exempt 
use property" within the meaning of Section 168(h) of the Code.

               (x)    As of the Effective Time, there will not be any 
contract, agreement, plan or arrangement, including but not limited to the 
provisions of this Agreement, covering any employee or former employee of the 
Company that, individually or collectively, could give rise to the payment of 
any amount that would not be deductible pursuant to Section 280G or 162 of 
the Code.

               (xi)   The Company has not filed any consent agreement under 
Section 341(f) of the Code or agreed to have Section 341(f)(2) of the Code 
apply to any disposition of a subsection (f) asset (as defined in Section 
341(f)(4) of the Code) owned by the Company.

               (xii)  The Company is not a party to a tax sharing or 
allocation agreement nor does the Company owe any amount under any such 
agreement.

               (xiii) The Company is not, and has not been at any time, a 
"United States real property holding corporation" within the meaning of 
Section 897(c)(2) of the Code.

               (xiv)  Since December 31, 1997 no taxes have been incurred 
except in the ordinary course of business. 

     2.9  RESTRICTIONS ON BUSINESS ACTIVITIES.  There is no agreement 
(noncompete or otherwise), commitment, judgment, injunction, order or decree 
to which the Company is a party or otherwise binding upon the Company which 
has or reasonably could be expected to have the effect of prohibiting or 
impairing any business practice of the Company, any acquisition of property 
(tangible or intangible) by the Company or the conduct of business by the 
Company.  Without limiting the foregoing, the Company has not entered into 
any agreement under which the Company is restricted from developing, selling, 
licensing, marketing, promoting or otherwise distributing any products, 
services or technology to any class of customers, or entering into any 
strategic alliances, in any geographic area, during any period of time or in 
any segment of the market.


                                      14

<PAGE>

     2.10 TITLE TO PROPERTIES; ABSENCE OF LIENS AND ENCUMBRANCES.

          (a)  The Company owns no real property, nor has it ever owned any 
real property.  Schedule 2.10(a) sets forth a list of all real property 
currently leased by the Company, the name of the lessor, the date of the 
lease and each amendment thereto and the aggregate annual rental and/or other 
fees payable under any such lease and any security interest in the Company's 
assets created by such lease.  All such leases are in full force and effect, 
are valid and effective in accordance with their respective terms, and there 
is not, under any of such leases, any existing default or event of default 
(or event which with notice or lapse of time, or both, would constitute a 
default).

          (b)  The Company has good and valid title to, or, in the case of 
leased properties and assets, valid leasehold interests in, all of its 
tangible properties and assets, real, personal and mixed, used or held for 
use in its business, free and clear of any Liens, except as reflected in the 
Company Financial Statements or in Schedule 2.10(b) and except for liens for 
taxes not yet due and payable and such imperfections of title and 
encumbrances, if any, which are not material in character, amount or extent, 
and which do not materially detract from the value, or materially interfere 
with the present use, of the property subject thereto or affected thereby.

     2.11 INTELLECTUAL PROPERTY.

          (a)  The Company owns, or is licensed or otherwise possesses 
legally enforceable rights to use, all patents, trademarks, trade names, 
service marks, copyrights, and any applications therefor, maskworks, net 
lists, schematics, technology, know-how, computer software programs or 
applications (in both source code and object code form), and tangible or 
intangible proprietary information or material that are used in the business 
of the Company as currently conducted or as proposed to be conducted by the 
Company (the "COMPANY INTELLECTUAL PROPERTY RIGHT(S)").  Schedule 2.11(a) 
sets forth a complete list of all patents, registered and material 
unregistered trademarks, registered copyrights, trade names and service 
marks, and any applications therefor, included in the Company Intellectual 
Property Rights, and specifies, where applicable, the jurisdictions in which 
each such Company Intellectual Property Right has been issued or registered 
or in which an application for such issuance and registration has been filed, 
including the respective registration or application numbers and the names of 
all registered owners. 

          (b)  Schedule 2.11(b) sets forth a complete list of all licenses, 
sublicenses and other agreements to which the Company is a party and pursuant 
to which the Company or any other person is authorized to use any Company 
Intellectual Property Right (excluding object code end-user licenses granted 
to end-users in the ordinary course of business that permit use of software 
products without a right to modify, distribute or sublicense the same 
("END-USER LICENSES")) or trade secret of the Company, and includes the 
identity of all parties thereto, a description of the nature and subject 
matter thereof, the applicable royalty or other fees and the term thereof.  
The execution and delivery of this Agreement by the Company, and the 
consummation of the transactions contemplated hereby, will neither cause the 
Company to be in violation or default under any such license, sublicense or 
agreement, nor entitle any other party to any such license, sublicense or 
agreement to terminate or


                                      15

<PAGE>

modify such license, sublicense or agreement.  Except as set forth in 
Schedules 2.11(a) or 2.11(b), the Company is the sole and exclusive owner or 
licensee of, with all right, title and interest in and to (free and clear of 
any liens or encumbrances), the Company Intellectual Property Rights, and has 
sole and exclusive rights (and is not contractually obligated to pay any 
compensation to any third party in respect thereof) to the use thereof or the 
material covered thereby in connection with the services or products in 
respect of which the Company Intellectual Property Rights are being used.  

          (c)  No claims with respect to the Company Intellectual Property 
Rights have been asserted or are, to the Company's Knowledge, threatened by 
any person, nor are there any valid grounds for any claims (i) to the effect 
that the manufacture, sale, licensing or use of any of the products of the 
Company infringes on any copyright, patent, trade mark, service mark, trade 
secret or other proprietary right, (ii) against the use by the Company of any 
trademarks, service marks, trade names, trade secrets, copyrights, maskworks, 
patents, technology, know-how or computer software programs and applications 
used in the Company's business as currently conducted or as proposed to be 
conducted by the Company, or (iii) challenging the ownership by the Company, 
validity or effectiveness of any of the Company Intellectual Property Rights. 
 All registered trademarks, service marks and copyrights held by the Company 
are valid and subsisting.  The Company has not infringed, and the business of 
the Company as currently conducted or as proposed to be conducted does not 
infringe, any copyright, patent, trademark, service mark, trade secret or 
other proprietary right of any third party.  There is no material 
unauthorized use, infringement or misappropriation of any of the Company 
Intellectual Property Rights by any third party, including any employee or 
former employee of the Company.  No Company Intellectual Property Right or 
product of the Company or any of its subsidiaries is subject to any 
outstanding decree, order, judgment, or stipulation restricting in any manner 
the licensing thereof by the Company. Each employee, consultant or contractor 
of the Company has executed a proprietary information and confidentiality 
agreement substantially in the Company's standard forms.  Except for software 
licensed to the Company, all software included in the Company Intellectual 
Property Rights (i) is original with the Company and has been either created 
by employees of the Company on a work-for-hire basis or by consultants or 
contractors who have created such software themselves and have assigned all 
rights they may have had in such software to the Company, or (ii) was 
acquired by the Company and the seller of such software made representations 
substantially similar to those contained in (i) in connection with the 
acquisition of such software.

     2.12 AGREEMENTS, CONTRACTS AND COMMITMENTS.  Except as set forth on 
Schedule 2.12(a), the Company does not have, is not a party to nor is it 
bound by:

               (i)   any collective bargaining agreements,

               (ii)  any agreements or arrangements that contain any 
severance pay or post-employment liabilities or obligations,

               (iii) any bonus, deferred compensation, pension, profit 
sharing or retirement plans, or any other employee benefit plans or 
arrangements,

                                      16

<PAGE>

               (iv)   any employment or consulting agreement, contract or 
commitment with an employee or individual consultant or salesperson or any 
consulting or sales agreement, contract or commitment under which any firm or 
other organization provides services to the Company,

               (v)    any agreement or plan, including, without limitation, 
any stock option plan, stock appreciation rights plan or stock purchase plan, 
any of the benefits of which will be increased, or the vesting of benefits of 
which will be accelerated, by the occurrence of any of the transactions 
contemplated by this Agreement or the value of any of the benefits of which 
will be calculated on the basis of any of the transactions contemplated by 
this Agreement,

               (vi)   any fidelity or surety bond or completion bond,

               (vii)  any lease of personal property having a value 
individually in excess of $25,000,

               (viii) any agreement of indemnification or guaranty,

               (ix)   any agreement, contract or commitment containing any 
covenant limiting the freedom of the Company to engage in any line of 
business or to compete with any person,

               (x)    any agreement, contract or commitment relating to 
capital expenditures and involving future payments in excess of $25,000,

               (xi)   any agreement, contract or commitment relating to the 
disposition or acquisition of assets or any interest in any business 
enterprise outside the ordinary course of the Company's business,

               (xii)  any mortgages, indentures, loans or credit agreements, 
security agreements or other agreements or instruments relating to the 
borrowing of money or extension of credit, including guaranties referred to 
in clause (viii) hereof,

               (xiii) any purchase order or contract for the purchase of raw 
materials involving $25,000 or more,

               (xiv)  any construction contracts,

               (xv)   any distribution, joint marketing or development 
agreement, 


                                      17

<PAGE>

               (xvi)  any agreement pursuant to which the Company has granted 
or may be required to grant in the future, to any party, a source-code 
license or option or other right to use or acquire source-code, or 

               (xvii) any other agreement, contract or commitment that 
involves $25,000 or more or is not cancelable without penalty within thirty 
(30) days.

Except for such alleged breaches, violations and defaults, and events that 
would constitute a breach, violation or default with the lapse of time, 
giving of notice, or both, as are noted in Schedule 2.12(b), the Company has 
not breached, violated or defaulted under, or received notice that it has 
breached, violated or defaulted under, any of the terms or conditions of any 
agreement, contract or commitment required to be set forth on Schedule 
2.12(a) or Schedule 2.11(b) (any such agreement, contract or commitment, a 
"COMPANY CONTRACT").  Each Company Contract is in full force and effect and, 
except as otherwise disclosed in Schedule 2.12(b), is not subject to any 
default thereunder of which the Company has Knowledge by any party obligated 
to the Company pursuant thereto.

     2.13 INTERESTED PARTY TRANSACTIONS.  Except as set forth on Schedule 
2.13, (i) no officer, director or, to the Knowledge of the Company (without 
any duty to investigate), any shareholder of the Company has, directly or 
indirectly, an economic interest in any entity which furnished or sold, or 
furnishes or sells, services or products that the Company furnishes or sells, 
or proposes to furnish or sell, (ii) no officer or director, or to the 
Knowledge of the Company (without any duty to investigate), any shareholder 
of the Company has, directly or indirectly, an economic interest in any 
entity that purchases from or sells or furnishes to, the Company, any goods 
or services or (iii) no officer, director or shareholder of the Company has, 
directly or indirectly, a beneficial interest in any contract or agreement 
set forth in Schedule 2.12(a) or Schedule 2.11(b); provided, that ownership 
of no more than one percent (1%) of the outstanding voting stock of a 
publicly traded corporation shall not be deemed an "economic interest in any 
entity" for purposes of this Section 2.13.  For the purposes of this 
subsection, "officer" and "director" shall include any parent, child, sibling 
or spouse of any of such persons, or any trust, partnership or corporation in 
which such officer or director has a controlling interest.

     2.14 COMPLIANCE WITH LAWS.  The Company has complied in all material 
respects with, is not in material violation of, and has not received any 
notices of violation with respect to, any foreign, federal, state or local 
statute, law or regulation.

     2.15 LITIGATION.  Except as set forth in Schedule 2.15, there is no 
action, suit or proceeding of any nature pending or to the Company's 
Knowledge threatened against the Company, its properties or any of its 
officers or directors in their respective capacities as such.  Except as set 
forth in schedule 2.15, to the Company's Knowledge, there is no investigation 
pending or threatened against the Company, its properties or any of its 
officers or directors (in their respective capacities as such) by or before 
any governmental entity.  Schedule 2.15 sets forth, with respect to any 
pending or threatened action, suit, proceeding or investigation, the forum, 
the parties thereto, the subject matter thereof and the amount of damages 
claimed or other remedy requested.  No Governmental Entity has 


<PAGE>

at any time challenged or questioned the legal right of the Company to 
manufacture, offer or sell any of its products in the present manner or style 
thereof.

     2.16 INSURANCE.  Set forth on Schedule 2.16 is a list of all of the 
Company's insurance policies and fidelity bonds.  With respect to the 
insurance policies and fidelity bonds covering the assets, business, 
equipment, properties, operations, employees, officers and directors of the 
Company, there is no claim by the Company pending under any of such policies 
or bonds as to which coverage has been questioned, denied or disputed by the 
underwriters of such policies or bonds.  All premiums due and payable under 
all such policies and bonds have been paid or will be paid when due and the 
Company is otherwise in material compliance with the terms of such policies 
and bonds (or other policies and bonds providing substantially similar 
insurance coverage).  The Company has no Knowledge of any threatened 
termination of, or material premium increase with respect to, any of such 
policies.

     2.17 MINUTE BOOKS.  The minute books of the Company made available to 
counsel for Parent are the only minute books of the Company and contain a 
reasonably accurate summary of all meetings of directors (or committees 
thereof) and shareholders or actions by written consent since the time of 
incorporation of the Company.

     2.18 ENVIRONMENTAL MATTERS.

          (a)  HAZARDOUS MATERIAL.  The Company has not operated any 
underground storage tanks, and has no Knowledge of the existence, at any 
time, of any underground storage tank (or related piping or pumps), at any 
property that the Company has at any time owned, operated, occupied or 
leased.  The Company has not released any amount of any substance that has 
been designated by any Governmental Entity or by applicable federal, state or 
local law to be radioactive, toxic, hazardous or otherwise a danger to health 
or the environment, including, without limitation, PCBs, asbestos, oil and 
petroleum products, urea-formaldehyde and all substances listed as a 
"hazardous substance," "hazardous waste," "hazardous material" or "toxic 
substance" or words of similar import, under any law, including but not 
limited to, the Comprehensive Environmental Response, Compensation, and 
Liability Act of 1980, as amended; the Resource Conservation and Recovery Act 
of 1976, as amended; the Federal Water Pollution Control Act, as amended; the 
Clean Air Act, as amended, and the regulations promulgated pursuant to said 
laws, (a "HAZARDOUS MATERIAL"). No Hazardous Materials are present as a 
result of the actions or omissions of the Company, or, to the Company's 
Knowledge, as a result of any actions of any third party or otherwise, in, on 
or under any property, including the land and the improvements, ground water 
and surface water thereof, that the Company has at any time owned, operated, 
occupied or leased.

          (b)  HAZARDOUS MATERIALS ACTIVITIES.  The Company has not 
transported, stored, used, manufactured, disposed of, released or exposed its 
employees or others to Hazardous Materials in violation of any law in effect 
on or before the Effective Time, nor has the Company disposed of, 
transported, sold, or manufactured any product containing a Hazardous 
Material (any or all of the foregoing being collectively referred to as 
"HAZARDOUS MATERIALS ACTIVITIES") in violation of any rule, 


                                      19

<PAGE>

regulation, treaty or statute promulgated by any Governmental Entity in 
effect prior to or as of the date hereof to prohibit, regulate or control 
Hazardous Materials or any Hazardous Material Activity.

          (c)  PERMITS.  The Company currently holds all environmental 
approvals, permits, licenses, clearances and consents (the "ENVIRONMENTAL 
PERMITS") necessary for the conduct of the Company's Hazardous Material 
Activities and other businesses of the Company as such activities and 
businesses are currently being conducted.

          (d)  ENVIRONMENTAL LIABILITIES.  No action, proceeding, revocation 
proceeding, amendment, procedure, writ, injunction or claim is pending, or to 
the Company's Knowledge, threatened concerning any Environmental Permit, 
Hazardous Material or any Hazardous Materials Activity of the Company.  The 
Company is not aware of any fact or circumstance which could involve the 
Company in any environmental litigation or impose upon the Company any 
environmental liability.

     2.19 BROKERS' AND FINDERS' FEES; THIRD PARTY EXPENSES.  Except as set 
forth on Schedule 2.19, the Company has not incurred, nor will it incur, 
directly or indirectly, any liability for brokerage or finders' fees, 
investment banking fees, consulting fees or agents' commissions or any 
similar charges in connection with this Agreement or any transaction 
contemplated hereby. Schedule 2.19 sets forth the principal terms and 
conditions of any agreement, written or oral, with respect to such fees.  
Schedule 2.19 also sets forth the Company's current reasonable estimate of 
all Company Third Party Expenses (as defined in Section 5.4) expected to be 
incurred by the Company in connection with the negotiation and effectuation 
of the terms and conditions of this Agreement and the transactions 
contemplated hereby.

     2.20 EMPLOYEE MATTERS AND BENEFIT PLANS.

          (a)  DEFINITIONS.  For purposes of this Section 2.20 and Section 
3.20 of this Agreement, the following terms shall have the meanings set forth 
below:

               (i)     "COMPANY AFFILIATE" shall mean any other person or 
entity under common control with the Company within the meaning of Section 
414(b) or (c) and the regulations thereunder.  In addition, for any Company 
Employee Plan subject to Section 412(n), the term Company Affiliate shall 
mean any other person or entity under common control with the Company within 
the meaning of Section 414(b), (c), (m) or (o) of the Code;

               (ii)    "ERISA" shall mean the Employee Retirement Income 
Security Act of 1974, as amended;

               (iii)   "COMPANY EMPLOYEE PLAN" shall refer to any plan, 
program, policy, practice, contract, agreement or other arrangement providing 
for compensation, severance, termination pay, performance awards, stock or 
stock-related awards, fringe benefits or other employee benefits or 
remuneration of any kind, whether formal or informal, funded or unfunded and 

                                      20

<PAGE>

whether or not legally binding, including without limitation, each "employee 
benefit plan", within the meaning of Section 3(3) of ERISA which is or has 
been maintained, contributed to, or required to be contributed to, by the 
Company or any Company Affiliate for the benefit of any "Company Employee" 
(as defined below), and any Company Employee Plan which has been maintained, 
contributed to, or required to have been contributed to by the Company or any 
Company Affiliate pursuant to which the Company or any Company Affiliate has 
or may have any material liability contingent or otherwise;

               (iv)    "COMPANY EMPLOYEE" shall mean any current, former, or 
retired employee, officer, or director of the Company or any Company 
Affiliate;

               (v)     "COMPANY EMPLOYEE AGREEMENT" shall refer to each 
written management, employment, severance, consulting, relocation, 
repatriation, expatriation, visas, work permit or similar agreement or 
contract between the Company or any Company Affiliate and any Employee or 
consultant.  Except as set forth on Schedule 2.20(a)(v), the Company 
represents and warrants that there are no oral agreements between the Company 
or any Affiliate and any Employee or consultant pertaining to management, 
employment, severance, consulting, relocation, repatriation, expatriation, 
visas, work permit or similar matters or arrangements;

               (vi)    "IRS" shall mean the Internal Revenue Service;

               (vii)   "MULTIEMPLOYER PLAN" shall mean any "Pension Plan" (as 
defined below) which is a "multiemployer plan", as defined in Section 3(37) 
of ERISA; and

               (viii)  "COMPANY PENSION PLAN" shall refer to each Company 
Employee Plan which is an "employee pension benefit plan", within the meaning 
of Section 3(2) of ERISA.

               (ix)    "COMPANY DEFINED BENEFIT PLAN" shall mean any Pension 
Plan that is a "defined benefit plan," as defined in ERISA Section 3(35).  

          (b)  SCHEDULE.  Schedule 2.20(b) contains an accurate and complete 
list of each Company Employee Plan and each Company Employee Agreement.  The 
Company does not have any plan or commitment, whether legally binding or not, 
to establish any new Company Employee Plan or Company Employee Agreement, to 
modify any Company Employee Plan or Company Employee Agreement (except to the 
extent required by law or to conform any such Company Employee Plan or 
Company Employee Agreement to the requirements of any applicable law, in each 
case as previously disclosed to Parent in writing, or as required by this 
Agreement), or to enter into any Company Employee Plan or Company Employee 
Agreement, nor does it have any intention or commitment to do any of the 
foregoing. 

          (c)  DOCUMENTS.  The Company has provided to Parent (i) correct and 
complete copies of all nonprivileged documents embodying or materially 
affecting the interpretation or application of each Company Employee Plan and 
each Company Employee Agreement including all amendments thereto, and, to the 
Knowledge of the Company, there are no privileged documents 


                                      21

<PAGE>

pertaining to such matters; (ii) the most recent annual actuarial valuations, 
if any, prepared for each Company Defined Benefit Plan; (iii) the three most 
recent annual reports (Series 5500 and all schedules thereto), if any, 
required under ERISA or the Code in connection with each Company Employee 
Plan or related trust; (iv) if the Company Employee Plan is funded, the most 
recent annual and periodic accounting of Company Employee Plan assets; (v) 
the most recent summary plan description together with the most recent 
summary of material modifications, if any, required under ERISA with respect 
to each Company Employee Plan which has a material adverse effect on such 
Company Employee Plan; (vi) the most recent IRS determination, opinion, 
notification or advisory letters as applicable, and rulings relating to 
Company Employee Plans and copies of all applications and correspondence to 
or from the IRS or the Department of Labor ("DOL") with respect to any 
Company Employee Plan; (vii) all communications material to any Company 
Employee or Company Employees relating to any Company Employee Plan and any 
proposed Company Employee Plans, in each case, relating to any amendments, 
terminations, establishments, increases or decreases in benefits, 
acceleration of payments or vesting schedules or other events which would 
result in any material liability to the Company; and (viii) all registration 
statements and prospectuses prepared in connection with each Company Employee 
Plan not otherwise publicly available on the SEC website.

          (d)  EMPLOYEE PLAN COMPLIANCE.  Except as set forth on Schedule 
2.20(d), (i) the Company has performed in all material respects all 
obligations required to be performed by it under each Company Employee Plan, 
and each Company Employee Plan has been established and maintained in all 
material respects in accordance with its terms and in compliance with all 
applicable laws, statutes, orders, rules and regulations, including but not 
limited to ERISA or the Code; (ii) no "prohibited transaction", within the 
meaning of Section 4975 of the Code or Section 406 of ERISA, has occurred 
with respect to any Company Employee Plan for which an exemption is not 
applicable; (iii) there are no actions, suits or claims pending, or, to the 
Knowledge of the Company, threatened or anticipated (other than routine 
claims for benefits) against any Company Employee Plan or against the assets 
of any Company Employee Plan; and (iv) each Company Employee Plan can be 
amended, terminated or otherwise discontinued after the Effective Time in 
accordance with its terms, without material liability to the Company, Parent 
or any of its Affiliates (other than ordinary administration expenses 
typically incurred in a termination event); (v) there are no inquiries or 
proceedings pending or, to the Knowledge of the Company or any Affiliates, 
threatened by the IRS or DOL with respect to any Company Employee Plan; and 
(vi) neither the Company nor any Company Affiliate is subject to any material 
penalty or tax with respect to any Company Employee Plan under Section 502(i) 
of ERISA or Section 4975 through 4980 of the Code.

          (e)  PENSION PLANS.  Except as set forth on Schedule 2.20(e), the 
Company does not now, nor has it ever, maintained, established, sponsored, 
participated in, or contributed to, any Pension Plan which is subject to Part 
3 of Subtitle B of Title I of ERISA, Title IV of ERISA or Section 412 of the 
Code.

          (f)  MULTIEMPLOYER PLANS.  At no time has the Company contributed 
to or been requested to contribute to any Multiemployer Plan.


                                     22

<PAGE>

          (g)  NO POST-EMPLOYMENT OBLIGATIONS.  Except as set forth in 
Schedule 2.20(g), no Company Employee Plan provides, or has any liability to 
provide, life insurance, medical or other employee welfare benefits to any 
Company Employee upon his or her retirement or termination of employment for 
any reason, except as may be required by statute, and the Company has never 
represented, promised or contracted (whether in oral or written form) to any 
Company Employee (either individually or to Company Employees as a group) 
that such Company Employee(s) would be provided with life insurance, medical 
or other employee welfare benefits upon their retirement or termination of 
employment, except to the extent required by statute.  The term "other 
employee welfare benefits" means those benefits traditionally provided under 
an "employee benefit welfare plan" as defined in ERISA Section 3(1).  

          (h)  COBRA.  Neither the Company nor any Company Affiliate has, 
prior to the Effective Time and in any material respect, violated any of the 
health care continuation requirements of COBRA, the requirements of the FMLA 
or any similar provisions of state law applicable to its Company Employees.  

          (i)  EFFECT OF TRANSACTION.

               (i)  Except as set forth on Schedule 2.20(i)(i), the execution 
of this Agreement and the consummation of the transactions contemplated 
hereby will not (either alone or upon the occurrence of any additional or 
subsequent events) constitute an event under any Company Employee Plan, 
Company Employee Agreement, trust or loan that will or may result in any 
payment (whether of severance pay or otherwise), acceleration, forgiveness of 
indebtedness, vesting, distribution, increase in benefits or obligation to 
fund benefits with respect to any Company Employee.

               (ii) Except as set forth on Schedule 2.20(i)(ii), no payment 
or benefit which will or may be made by the Company or Parent or any of their 
respective affiliates with respect to any Employee will be characterized as 
an "excess parachute payment" within the meaning of Section 280G(b)(1) of the 
Code.

          (j)  EMPLOYMENT MATTERS.  The Company (i) is in compliance in all 
material respects with all applicable foreign, federal, state and local laws, 
rules and regulations respecting employment, employment practices, terms and 
conditions of employment and wages and hours, in each case, with respect to 
Company Employees; (ii) has withheld all amounts required by law or by 
agreement to be withheld from the wages, salaries and other payments to 
Company Employees; (iii) is not liable for any arrears of wages, other than 
arrears normally included in its payroll schedule and system, or any taxes or 
any penalty for failure to comply with any of the foregoing; and (iv) is not 
liable for any payment to any trust or other fund or to any governmental or 
administrative authority, with respect to unemployment compensation benefits, 
social security or other benefits or obligations for Company Employees (other 
than routine payments to be made in the normal course of business and 
consistent with past practice).


                                     23

<PAGE>

          (k)  LABOR.  To the Knowledge of the Company, no work stoppage or 
labor strike against the Company is pending or threatened.  Except as set 
forth in Schedule 2.20(k), the Company is not involved in or, to the 
Knowledge of the Company, threatened with, any labor dispute, grievance, or 
litigation relating to labor, safety or discrimination matters involving any 
Company Employee, including, without limitation, charges of unfair labor 
practices or discrimination complaints, which, if adversely determined, 
would, individually or in the aggregate, result in a material liability to 
the Company.  To the Knowledge of the Company, neither the Company nor any of 
its subsidiaries has engaged in any unfair labor practices within the meaning 
of the National Labor Relations Act which would, individually or in the 
aggregate, directly or indirectly result in a liability to the Company.  
Except as set forth in Schedule 2.20(k), the Company is not presently, nor 
has it been in the past, a party to, or bound by, any collective bargaining 
agreement or union contract with respect to Company Employees and no 
collective bargaining agreement is being negotiated by the Company.

     2.21 ACCOUNTING AND REGULATORY MATTERS.  The Company has no Knowledge of 
any action taken or agreed to be taken by the Company or any affiliate of the 
Company or has any Knowledge of any fact or circumstance that is reasonably 
likely to (a) prevent the Merger from qualifying for pooling-of-interests 
accounting treatment, or (b) materially impede or delay receipt of any 
consents of regulatory authorities referred to in Section 6.1(c), Section 
6.1(e) and Section 6.1(h) or result in the imposition of a condition or 
restriction of the type referred to in the last sentence of such Section.  An 
"AFFILIATE" of a Person shall mean:  (i) any other Person directly, or 
indirectly through one or more intermediaries, controlling, controlled by or 
under common control with such Person; (ii) any officer, director, partner, 
employer, or direct or indirect beneficial owner of any 5% or greater equity 
or voting interest of such Person; or (iii) any other Persons for which a 
Person described in clause (ii) acts in any such capacity.

     2.22 REPRESENTATIONS COMPLETE.  None of the representations or 
warranties made by the Company (as modified by the Company Schedules), nor 
any statement made in any schedule or certificate furnished by the Company 
pursuant to this Agreement, or furnished in or in connection with documents 
mailed or delivered to the shareholders of the Company in connection with 
soliciting their consent to this Agreement and the Merger, contains or will 
contain at the Effective Time, any untrue statement of a material fact, or 
omits or will omit at the Effective Time to state any material fact necessary 
in order to make the statements contained herein or therein, in the light of 
the circumstances under which made, not misleading.

                                       
                                  ARTICLE III

            REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUB

     Parent and Merger Sub hereby represent and warrant to the Company, 
subject to such exceptions as are specifically disclosed in the disclosure 
schedule (referencing the appropriate section number or subsection, as the 
case may be) supplied by the Parent and Merger Sub to the 


                                     24

<PAGE>

Company attached hereto as EXHIBIT B (the "PARENT AND MERGER SUB SCHEDULES") 
and dated as of the date hereof, as follows:

     3.1  ORGANIZATION OF PARENT AND MERGER SUB.  Parent is a corporation 
duly organized, validly existing and in good standing under the laws of the 
State of Delaware.  Merger Sub is a corporation duly organized, validly 
existing and in good standing under the laws of the State of Delaware.  
Parent has the corporate power to own its properties and to carry on their 
business as now being conducted.  Parent is duly qualified to do business and 
in good standing as a foreign corporation in each jurisdiction in which the 
failure to be so qualified would have a material adverse effect on the 
business, assets (including intangible assets), financial condition or 
results of operations of Parent (hereinafter referred to as a "PARENT 
MATERIAL ADVERSE EFFECT").  Parent has delivered a true and correct copy of 
its Certificate of Incorporation and Bylaws, each as amended to date, to the 
Company.  Merger Sub has delivered a true and correct copy of its Certificate 
of Incorporation and Bylaws, each as amended to date, to the Company.  

     3.2  PARENT AND MERGER SUB CAPITAL STRUCTURE.

          (a)  The authorized capital stock of Parent consists of 37,000,000 
shares of authorized Common Stock, of which 3,571,480 shares are issued and 
outstanding, 10,305,000 shares of authorized Series A Preferred Stock, of 
which 10,305,000 shares are issued and outstanding, 10,305,000 shares of 
authorized Series A-1 Preferred Stock, none of which is issued and 
outstanding, 6,105,000 shares of authorized Series B Preferred Stock, of 
which 3,290,000 shares are issued and outstanding, 6,105,000 shares of 
authorized Series B-1 Preferred Stock, none of which is issued and 
outstanding, 2,600,000 shares of authorized Series C Preferred Stock, of 
which 2,600,000 shares are issued and outstanding, 2,600,000 shares of 
authorized Series C-1 Preferred Stock, none of which is issued and 
outstanding, 5,000,000 shares of authorized Series D Preferred Stock, of 
which 4,807,692 shares are issued and outstanding, 5,000,000 shares of 
authorized Series D-1 Preferred Stock, none of which is issued and 
outstanding. The shares of the capital stock of Parent are held of record by 
the persons, with the addresses of record and in the amounts set forth on 
Schedule 3.2(a). All outstanding shares of Parent Capital Stock are duly 
authorized, validly issued, fully paid and non-assessable and not subject to 
preemptive rights created by statute, the Certificate of Incorporation or 
Bylaws of Parent or any agreement to which Parent is a party or by which it 
is bound.

          (b)  The authorized capital stock of Merger Sub consists of 100 
shares of authorized Common Stock, all of which are issued and outstanding 
and held of record by Parent.  All outstanding shares of the capital stock of 
Merger Sub are duly authorized, validly issued, fully paid and non-assessable 
and not subject to preemptive rights created by statute, the Certificate of 
Incorporation or Bylaws of Merger Sub or any agreement to which the Merger 
Sub is a party or by which it is bound.

          (c)  Parent has reserved (i) 9,000,000 shares of Common Stock for 
issuance to directors, employees and consultants pursuant to Parent's 1996 
Stock Plan ("PARENT STOCK PLAN"), of which 6,441,520 shares are subject to 
outstanding, unexercised options ("PARENT OPTIONS") and 


                                     25

<PAGE>

2,558,480 shares remain available for future grant, (ii) 500,000 shares of 
Common Stock for issuance pursuant to an outstanding warrant ("COMMON 
WARRANT") and (iii) 2,811,947 shares of Series B Preferred Stock for issuance 
pursuant to outstanding warrants ("PREFERRED WARRANTS").  The Parent Options, 
the Common Warrant and the Preferred Warrants are collectively referred to 
herein as "PARENT CONVERTIBLE SECURITIES."  Schedule 3.2(b) sets forth for 
each outstanding Parent Convertible Security, the name of the holder of such 
Parent Convertible Security, the domicile address of such holder, the number 
of shares of Common Stock subject to such Parent Convertible Security, the 
exercise price of such Parent Convertible Security and the vesting schedule 
for such Parent Convertible Security, including the extent vested to date and 
whether the exercisability of such Parent Convertible Security will be 
accelerated and become exercisable by reason of the transactions contemplated 
by this Agreement.  Except for the Parent Convertible Securities described in 
Schedule 3.2(b), there are no options, warrants, calls, rights, commitments 
or agreements of any character, written or oral, to which Parent is a party 
or by which it is bound obligating Parent to issue, deliver, sell, repurchase 
or redeem, or cause to be issued, delivered, sold, repurchased or redeemed, 
any shares of the capital stock of Parent or obligating Parent to grant, 
extend, accelerate the vesting of, change the price of, otherwise amend or 
enter into any such option, warrant, call, right, commitment or agreement. 

     3.3  SUBSIDIARIES.  Other than Merger Sub, Parent does not have any 
subsidiaries and does not otherwise own and has never otherwise owned any 
shares of capital stock or any interest in, or control, directly or 
indirectly, any other corporation, partnership,  limited liability company, 
association, joint venture or other business entity.

     3.4  AUTHORITY.  Subject only to the requisite approval of the Merger and
this Agreement by Parent's stockholders and Merger Sub's shareholder, each of
Parent and Merger Sub has all requisite corporate power and authority to enter
into this Agreement and to consummate the transactions contemplated hereby.  A
majority vote is required of the holders of Parent's Common Stock and the
holders of Parent's Preferred Stock, each voting as a separate class, to duly
approve the Merger and this Agreement.  A majority vote is required of the
holders of Merger Sub's Common Stock to duly approve the Merger and this
Agreement. The execution and delivery of this Agreement and the consummation of
the transactions contemplated hereby have been duly authorized by all necessary
corporate action on the part of the Company and Merger Sub, subject only to the
approval of the Merger by Parent's stockholders and Merger Sub's shareholder. 
Each of Parent's Board of Directors and Merger Sub's Board of Directors have
unanimously approved the Merger and this Agreement.  This Agreement has been
duly executed and delivered by Parent and Merger Sub and constitutes the valid
and binding obligation of Parent and Merger Sub, enforceable in accordance with
its terms (except in all cases as such enforceability may be limited by
applicable bankruptcy, insolvency, reorganization, receivership,
conservatorship, moratorium, or similar Laws affecting the enforcement of
creditors' rights generally and except that the availability of the equitable
remedy of specific performance or injunctive relief is subject to the discretion
of the court before which any proceeding may be brought).  Except as set forth
on Schedule 3.4, subject only to the approval of the Merger and this Agreement
by Parent's stockholders and Merger Sub's shareholders, the execution and
delivery of this Agreement by Parent and Merger Sub does not, and, as of the
Effective Time, 


                                     26

<PAGE>

the consummation of the transactions contemplated hereby will not, conflict 
with, or result in any violation of, or default under (with or without notice 
or lapse of time, or both), or give rise to a right of termination, 
cancellation or acceleration of any obligation or loss of any benefit under 
(any such event, a "PARENT CONFLICT") (i) any provision of the Certificate of 
Incorporation or Bylaws of Parent, (ii) any provision of the Articles of 
Incorporation or Bylaws of Merger Sub, or (iii) any mortgage, indenture, 
lease, contract or other agreement or instrument, permit, concession, 
franchise, license, judgment, order, decree, statute, law, ordinance, rule or 
regulation applicable to Parent or its properties or assets.  No consent, 
waiver, approval, order or authorization of, or registration, declaration or 
filing with, any Governmental Entity or any third party (so as not to trigger 
any Parent Conflict) is required by or with respect to Parent or Merger Sub 
in connection with the execution and delivery of this Agreement or the 
consummation of the transactions contemplated hereby, except for (i) the 
filing of the Articles of Merger with the Georgia Secretary of State, (ii) 
such consents, waivers, approvals, orders, authorizations, registrations, 
declarations and filings as may be required under applicable federal and 
state securities laws, (iii) such notices or filings with the Internal 
Revenue Service or the Pension Benefit Guaranty Corporation with respect to 
any employee benefit plans or under the HSR Act and (iv) such other consents, 
waivers, authorizations, filings, approvals and registrations which are set 
forth on Schedule 3.4.  Parent, as the sole shareholder of Merger Sub, has 
voted prior to the Effective Time the shares of Merger Sub's Common Stock in 
favor of approval of this Agreement, as and to the extent required by 
applicable law.

     3.5  FINANCIAL STATEMENTS.  Schedule 3.5 sets forth the Parent's 
unaudited balance sheet as of December 31, 1997, and the related unaudited 
statement of income and cash flow for the twelve month period ended December 
31, 1997 (the "PARENT UNAUDITED FINANCIALS"), and the audited balance sheet 
as of December 31, 1996, and the related audited statement of income and cash 
flow for the twelve-month period ended December 31, 1996 (the "PARENT AUDITED 
FINANCIALS") (collectively, such financial statements are sometimes referred 
to herein as "PARENT FINANCIAL STATEMENTS").  The Parent Unaudited Financials 
and the Parent Audited Financials have been prepared in accordance with GAAP 
applied on a basis consistent throughout the periods indicated and consistent 
with each other (except that the Parent Unaudited Financials do not contain 
all the notes that may be required by GAAP).  The Parent Unaudited Financials 
and Parent Audited Financials present fairly the financial condition, 
operating results and cash flows of the Parent as of the dates and during the 
periods indicated therein, subject in the case of the Parent Unaudited 
Financials, to normal year-end adjustments, which will not be material in 
amount or significance.  Parent's unaudited balance sheet dated as of 
December 31, 1997, shall be referred to as the "PARENT CURRENT BALANCE SHEET".

     3.6  NO UNDISCLOSED LIABILITIES.  Except as set forth in Schedule 3.6, 
Parent does not have any liability, indebtedness, obligation, expense, claim, 
deficiency, guaranty or endorsement of any type, whether accrued, absolute, 
contingent, matured, unmatured or other (whether or not required to be 
reflected in financial statements in accordance with generally accepted 
accounting principles), which individually or in the aggregate, (i) has not 
been reflected in the Parent Current Balance Sheet, or (ii) has not arisen in 
the ordinary course of Parent's business since the date of the Parent Current 
Balance Sheet, consistent with past practices.


                                     27

<PAGE>

     3.7  NO CHANGES.  Except as set forth in Schedule 3.7, since the date of 
the Parent Current Balance Sheet, there has not been, occurred or arisen any:

          (a)  transaction by Parent except in the ordinary course of 
business as conducted as of the date of the Parent Current Balance Sheet and 
consistent with past practices;

          (b)  amendments or changes to the Certificate of Incorporation or 
Bylaws of Parent;

          (c)  capital expenditure or commitment by Parent, either 
individually or in the aggregate, exceeding $25,000;

          (d)  destruction of, damage to or loss of any material assets, 
business or customer of Parent (whether or not covered by insurance);

          (e)  labor trouble or claim of wrongful discharge or other unlawful 
labor practice or action;

          (f)  change in accounting methods or practices (including any 
change in depreciation or amortization policies or rates) by Parent;

          (g)  revaluation by Parent of any of its assets;

          (h)  declaration, setting aside or payment of a dividend or other 
distribution with respect to the capital stock of Parent, or any direct or 
indirect redemption, purchase or other acquisition by Parent of any of its 
capital stock;

          (i)  increase in the salary or other compensation payable or to 
become payable to any of Parent's officers, directors, employees or advisors, 
or the declaration, payment or commitment or obligation of any kind for the 
payment of a bonus or other additional salary or compensation to any such 
person except as otherwise contemplated by this Agreement or in the ordinary 
course of business and consistent with past practices and Schedule 3.7(i) 
lists all salary increases in excess of 10% and any bonus or other 
compensation arrangement exceeding $10,000;

          (j)  sale, lease, license or other disposition of any of the assets 
or properties of Parent, except in the ordinary course of business as 
conducted on that date and consistent with past practices;

          (k)  material amendment or termination of any material contract, 
agreement or license to which Parent is a party or by which it is bound;

          (l)  loan by Parent to any person or entity, incurring by Parent of 
any indebtedness, guaranteeing by Parent of any indebtedness, issuance or 
sale of any debt securities of 


                                     28

<PAGE>

Parent or guaranteeing of any debt securities of others, except for advances 
to employees for travel and business expenses in the ordinary course of 
business, consistent with past practices;

          (m)  waiver or release of any right or claim of Parent, including 
any write-off or other compromise of any account receivable of Parent;

          (n)  commencement or notice or threat of commencement of any 
lawsuit or proceeding against or investigation of Parent or its affairs;

          (o)  notice of any claim of ownership by a third party of Parent's 
Intellectual Property (as defined in Section 3.11 below) or of infringement 
by Parent's of any third party's Intellectual Property rights;

          (p)  issuance or sale by Parent of any of its shares of capital 
stock, or securities exchangeable, convertible or exercisable therefor, or of 
any other of its securities;

          (q)  change in pricing or royalties set or charged by Parent to its 
customers or licensees or in pricing or royalties set or charged by persons 
who have licensed Intellectual Property to Parent;

          (r)  event or condition of any character that has or could be 
reasonably expected to have a Parent Material Adverse Effect on Parent; or

          (s)  negotiation or agreement by Parent or any officer or employees 
thereof to do any of the things described in the preceding clauses (a) 
through (r) (other than negotiations with the Company and its representatives 
regarding the transactions contemplated by this Agreement).

     3.8  TAX AND OTHER RETURNS AND REPORTS.

          (a)  TAX RETURNS AND AUDITS.  Except as set forth in Schedule 3.8:

               (i)     Parent as of the Effective Time will have prepared and 
filed all required Returns relating to any and all Taxes concerning or 
attributable to Parent or its operations and such Returns are true and 
correct in all material respects and have been completed in accordance with 
applicable law.

               (ii)    Parent as of the Effective Time:  (A) will have paid 
or accrued on the Parent Unaudited Financials all Taxes it is required to pay 
or which are attributable to the period ending December 31, 1997 and (B) will 
have withheld with respect to its employees all federal and state income 
taxes, FICA, FUTA and other Taxes required to be withheld.

               (iii)   Parent has not been delinquent in the payment of any 
Tax nor is there any Tax deficiency outstanding, assessed, or to its 
Knowledge proposed against Parent, nor has 

                                     29

<PAGE>

Parent executed any waiver of any statute of limitations on or extending the 
period for the assessment or collection of any Tax.

               (iv)    No audit or other examination of any Return of Parent 
is currently in progress, nor has Parent been notified of any request for 
such an audit or other examination.

               (v)     Parent does not have any liabilities for unpaid 
federal, state, local and foreign Taxes which have not been accrued or 
reserved against in accordance with GAAP on the Parent Current Balance Sheet, 
whether asserted or unasserted, contingent or otherwise, and Parent has no 
Knowledge of any basis for the assertion of any such liability attributable 
to the Company, its assets or operations.

               (vi)    Parent has provided to the Company copies of all 
federal and state income and all state sales and use Tax Returns for all 
periods since the date of Parent's incorporation.

               (vii)   There are (and as of immediately following the 
Effective Date there will be) no Liens on the assets of Parent relating to or 
attributable to Taxes.

               (viii)  Parent has no Knowledge of any basis for the assertion 
of any claim relating or attributable to Taxes which, if adversely 
determined, would result in any Lien on the assets of Parent.

               (ix)    None of Parent's assets are treated as "tax-exempt use 
property" within the meaning of Section 168(h) of the Code.

               (x)     As of the Effective Time, there will not be any 
contract, agreement, plan or arrangement, including but not limited to the 
provisions of this Agreement, covering any employee or former employee of 
Parent that, individually or collectively, could give rise to the payment of 
any amount that would not be deductible pursuant to Section 280G or 162 of 
the Code.

               (xi)    Parent has not filed any consent agreement under 
Section 341(f) of the Code or agreed to have Section 341(f)(2) of the Code 
apply to any disposition of a subsection (f) asset (as defined in Section 
341(f)(4) of the Code) owned by Parent.

               (xii)   Parent is not a party to a tax sharing or allocation 
agreement nor does Parent owe any amount under any such agreement.

               (xiii)  Parent is not, and has not been at any time, a "United 
States real property holding corporation" within the meaning of Section 
897(c)(2) of the Code.

               (xiv)   Since December 31, 1997 no Taxes have been incurred 
except in the ordinary course of business. 


                                     30

<PAGE>

Parent's tax basis in its assets for purposes of determining its future 
amortization, depreciation and other federal income tax deductions is 
accurately reflected on the Parent's tax books and records.

     3.9  RESTRICTIONS ON BUSINESS ACTIVITIES.  There is no agreement 
(noncompete or otherwise), commitment, judgment, injunction, order or decree 
to which Parent is a party or otherwise binding upon Parent which has or 
reasonably could be expected to have the effect of prohibiting or impairing 
any business practice of Parent, any acquisition of property (tangible or 
intangible) by Parent or the conduct of business by Parent.  Without limiting 
the foregoing, Parent has not entered into any agreement under which Parent 
is restricted from developing, selling, licensing, marketing, promoting or 
otherwise distributing any products, services or technology to any class of 
customers, or entering into any strategic alliances, in any geographic area, 
during any period of time or in any segment of the market.

     3.10 TITLE TO PROPERTIES; ABSENCE OF LIENS AND ENCUMBRANCES.

          (a)  Parent owns no real property, nor has it ever owned any real 
property.  Schedule 3.10(a) sets forth a list of all real property currently 
leased by Parent, the name of the lessor, the date of the lease and each 
amendment thereto and the aggregate annual rental and/or other fees payable 
under any such lease and any security interest in Parent's assets created by 
such lease.  All such leases are in full force and effect, are valid and 
effective in accordance with their respective terms, and there is not, under 
any of such leases, any existing default or event of default (or event which 
with notice or lapse of time, or both, would constitute a default).

          (b)  Parent has good and valid title to, or, in the case of leased 
properties and assets, valid leasehold interests in, all of its tangible 
properties and assets, real, personal and mixed, used or held for use in its 
business, free and clear of any Liens, except as reflected in the Parent 
Financial Statements or in Schedule 3.10(b) and except for liens for taxes 
not yet due and payable and such imperfections of title and encumbrances, if 
any, which are not material in character, amount or extent, and which do not 
materially detract from the value, or materially interfere with the present 
use, of the property subject thereto or affected thereby.

     3.11 INTELLECTUAL PROPERTY.

          (a)  Parent owns, or is licensed or otherwise possesses legally 
enforceable rights to use, all patents, trademarks, trade names, service 
marks, copyrights, and any applications therefor, maskworks, net lists, 
schematics, technology, know-how, computer software programs or applications 
(in both source code and object code form), and tangible or intangible 
proprietary information or material that are used in the business of Parent 
as currently conducted or as proposed to be conducted by Parent (the "PARENT 
INTELLECTUAL PROPERTY RIGHT(S)").  Schedule 3.11(a) sets forth a complete 
list of all patents, registered and material unregistered trademarks, 
registered copyrights, trade names and service marks, and any applications 
therefor, included in the Parent Intellectual Property Rights, and specifies, 
where applicable, the jurisdictions in which each such Parent Intellectual 
Property Right has been issued or registered or in which an application for 
such issuance 


                                     31

<PAGE>

and registration has been filed, including the respective registration or 
application numbers and the names of all registered owners. 

          (b)  Schedule 3.11(b) sets forth a complete list of all licenses, 
sublicenses and other agreements to which Parent is a party and pursuant to 
which Parent or any other person is authorized to use any Parent Intellectual 
Property Right (excluding End-User Licenses) or trade secret of Parent, and 
includes the identity of all parties thereto, a description of the nature and 
subject matter thereof, the applicable royalty or other fees and the term 
thereof.  The execution and delivery of this Agreement by Parent, and the 
consummation of the transactions contemplated hereby, will neither cause 
Parent to be in violation or default under any such license, sublicense or 
agreement, nor entitle any other party to any such license, sublicense or 
agreement to terminate or modify such license, sublicense or agreement.  
Except as set forth in Schedules 3.11(a) or 3.11(b), Parent is the sole and 
exclusive owner or licensee of, with all right, title and interest in and to 
(free and clear of any liens or encumbrances), the Parent Intellectual 
Property Rights, and has sole and exclusive rights (and is not contractually 
obligated to pay any compensation to any third party in respect thereof) to 
the use thereof or the material covered thereby in connection with the 
services or products in respect of which the Parent Intellectual Property 
Rights are being used.  

          (c)  No claims with respect to the Parent Intellectual Property 
Rights have been asserted or are, to Parent's Knowledge, threatened by any 
person, nor are there any valid grounds for any claims, (i) to the effect 
that the manufacture, sale, licensing or use of any of the products of Parent 
infringes on any copyright, patent, trade mark, service mark, trade secret or 
other proprietary right, (ii) against the use by Parent of any trademarks, 
service marks, trade names, trade secrets, copyrights, maskworks, patents, 
technology, know-how or computer software programs and applications used in 
Parent's business as currently conducted or as proposed to be conducted by 
Parent, or (iii) challenging the ownership by Parent, validity or 
effectiveness of any of the Parent Intellectual Property Rights.  All 
registered trademarks, service marks and copyrights held by Parent are valid 
and subsisting. Parent has not infringed, and the business of Parent as 
currently conducted or as proposed to be conducted does not infringe, any 
copyright, patent, trademark, service mark, trade secret or other  
proprietary right of any third party.  There is no material unauthorized use, 
infringement or misappropriation of any of the Parent Intellectual Property 
Rights by any third party, including any employee or former employee of 
Parent.  No Parent Intellectual Property Right or product of Parent or any of 
its subsidiaries is subject to any outstanding decree, order, judgment, or 
stipulation restricting in any manner the licensing thereof by Parent.  Each 
employee, consultant or contractor of Parent has executed a proprietary 
information and confidentiality agreement substantially in the Parent's 
standard forms. All software included in the Parent Intellectual Property 
Rights is original with Parent and has been either created by employees of 
Parent on a work-for-hire basis or by consultants or contractors who have 
created such software themselves and have assigned all rights they may have 
had in such software to Parent.

     3.12 AGREEMENTS, CONTRACTS AND COMMITMENTS.  Except as set forth on 
Schedule 3.12(a), Parent does not have, is not a party to nor is it bound by:


                                     32

<PAGE>

               (i)     any collective bargaining agreements,

               (ii)    any agreements or arrangements that contain any 
severance pay or post-employment liabilities or obligations,

               (iii)   any bonus, deferred compensation, pension, profit 
sharing or retirement plans, or any other employee benefit plans or 
arrangements,

               (iv)    any employment or consulting agreement, contract or 
commitment with an employee or individual consultant or salesperson or any 
consulting or sales agreement, contract or commitment under which any firm or 
other organization provides services to Parent,

               (v)     any agreement or plan, including, without limitation, 
any stock option plan, stock appreciation rights plan or stock purchase plan, 
any of the benefits of which will be increased, or the vesting of benefits of 
which will be accelerated, by the occurrence of any of the transactions 
contemplated by this Agreement or the value of any of the benefits of which 
will be calculated on the basis of any of the transactions contemplated by 
this Agreement,

               (vi)    any fidelity or surety bond or completion bond,

               (vii)   any lease of personal property having a value 
individually in excess of $25,000,

               (viii)  any agreement of indemnification or guaranty,

               (ix)    any agreement, contract or commitment containing any 
covenant limiting the freedom of Parent to engage in any line of business or 
to compete with any person,

               (x)     any agreement, contract or commitment relating to 
capital expenditures and involving future payments in excess of $25,000,

               (xi)    any agreement, contract or commitment relating to the 
disposition or acquisition of assets or any interest in any business 
enterprise outside the ordinary course of the Parent's business,

               (xii)   any mortgages, indentures, loans or credit agreements, 
security agreements or other agreements or instruments relating to the 
borrowing of money or extension of credit, including guaranties referred to 
in clause (viii) hereof,

               (xiii)  any purchase order or contract for the purchase of raw 
materials involving $25,000 or more,

               (xiv)   any construction contracts,


                                     33

<PAGE>

               (xv)    any distribution, joint marketing or development 
agreement, 

               (xvi)   any agreement pursuant to which Parent has granted or 
may grant in the future, to any party, a source-code license or option or 
other right to use or acquire source-code, or 

               (xvii)  any other agreement, contract or commitment that 
involves $25,000 or more or is not cancelable without penalty within thirty 
(30) days.

Except for such alleged breaches, violations and defaults, and events that 
would constitute a breach, violation or default with the lapse of time, 
giving of notice, or both, as are all noted in Schedule 3.12(b), Parent has 
not breached, violated or defaulted under, or received notice that it has 
breached, violated or defaulted under, any of the terms or conditions of any 
agreement, contract or commitment required to be set forth on Schedule 
3.12(a) or Schedule 3.11(b) (any such agreement, contract or commitment, a 
"PARENT CONTRACT").  Each Parent Contract is in full force and effect and, 
except as otherwise disclosed in Schedule 3.12(b), is not subject to any 
default thereunder of which Parent has Knowledge by any party obligated to 
Parent pursuant thereto.

     3.13 INTERESTED PARTY TRANSACTIONS.  Except as set forth on Schedule 
3.13, (i) no officer, director or, to the Knowledge of Parent (without any 
duty to investigate), any shareholder of Parent has, directly or indirectly, 
an economic interest in any entity which furnished or sold, or furnishes or 
sells, services or products that Parent furnishes or sells, or proposes to 
furnish or sell, (ii) no officer, director or, to the Knowledge of Parent 
(without any duty to investigate), any stockholder of Parent has, directly or 
indirectly, an economic interest in any entity that purchases from or sells 
or furnishes to, Parent, any goods or services or (iii) no officer, director 
or shareholder of Parent has, directly or indirectly, a beneficial interest 
in any contract or agreement set forth in Schedule 3.12(a) or Schedule 
3.11(b); provided, that ownership of no more than one percent (1%) of the 
outstanding voting stock of a publicly traded corporation shall not be deemed 
an "economic interest in any entity" for purposes of this Section 3.13.  For 
the purposes of this subsection, "officer" and "director" shall include any 
parent, child, sibling or spouse of any of such persons, or any trust, 
partnership or corporation in which such officer or director has a 
controlling interest.

     3.14 COMPLIANCE WITH LAWS. Parent has complied in all material respects 
with, is not in material violation of, and has not received any notices of 
violation with respect to, any foreign, federal, state or local statute, law 
or regulation.

     3.15 LITIGATION.  Except as set forth in Schedule 3.15, there is no 
action, suit or proceeding of any nature pending or to Parent's Knowledge 
threatened against Parent, its properties or any of its officers or 
directors, in their respective capacities as such.  Except as set forth in 
Schedule 3.15, to the Parent's Knowledge, there is no investigation pending 
or threatened against Parent, its properties or any of its officers or 
directors (in their respective capacities as such) by or before any 
governmental entity.  Schedule 3.15 sets forth, with respect to any pending 
or threatened action, suit, 


                                     34

<PAGE>

proceeding or investigation, the forum, the parties thereto, the subject 
matter thereof and the amount of damages claimed or other remedy requested.  
No Governmental Entity has at any time challenged or questioned the legal 
right of Parent to manufacture, offer or sell any of its products in the 
present manner or style thereof.

     3.16 INSURANCE.  Set forth on Schedule 3.16 is a list of all of Parent's 
insurance policies and fidelity bonds.  With respect to the insurance 
policies and fidelity bonds covering the assets, business, equipment, 
properties, operations, employees, officers and directors of Parent, there is 
no claim by Parent pending under any of such policies or bonds as to which 
coverage has been questioned, denied or disputed by the underwriters of such 
policies or bonds. All premiums due and payable under all such policies and 
bonds have been paid and Parent is otherwise in material compliance with the 
terms of such policies and bonds (or other policies and bonds providing 
substantially similar insurance coverage). Parent has no Knowledge of any 
threatened termination of, or material premium increase with respect to, any 
of such policies.

     3.17 MINUTE BOOKS.  The minute books of Parent made available to counsel 
for the Company are the only minute books of Parent and contain a reasonably 
accurate summary of all meetings of directors (or committees thereof) and 
stockholders or actions by written consent since the time of incorporation of 
Parent.

     3.18 ENVIRONMENTAL MATTERS.

          (a)  HAZARDOUS MATERIAL.  Parent has not operated any underground 
storage tanks, and has no Knowledge of the existence, at any time, of any 
underground storage tank (or related piping or pumps), at any property that 
Parent has at any time owned, operated, occupied or leased.  Parent has not 
released any amount of any substance that has been designated by any 
Governmental Entity or by applicable federal, state or local law to be a 
Hazardous Material.  No Hazardous Materials are present as a result of the 
actions or omissions of Parent, or, to Parent's Knowledge, as a result of any 
actions of any third party or otherwise, in, on or under any property, 
including the land and the improvements, ground water and surface water 
thereof, that Parent has at any time owned, operated, occupied or leased.

          (b)  HAZARDOUS MATERIALS ACTIVITIES. Parent has not engaged in any 
Hazardous Materials Activities in violation of any rule, regulation, treaty 
or statute promulgated by any Governmental Entity in effect prior to or as of 
the date hereof to prohibit, regulate or control Hazardous Materials or any 
Hazardous Material Activity.

          (c)  PERMITS.  The Company currently holds all Environmental 
Permits necessary for the conduct of Parent's Hazardous Material Activities 
and other businesses of Parent as such activities and businesses are 
currently being conducted.

          (d)  ENVIRONMENTAL LIABILITIES.  No action, proceeding, revocation 
proceeding, amendment, procedure, writ, injunction or claim is pending, or to 
Parent's Knowledge, threatened 


                                     35

<PAGE>

concerning any Environmental Permit, Hazardous Material or any Hazardous 
Materials Activity of Parent. Parent is not aware of any fact or circumstance 
which could involve Parent in any environmental litigation or impose upon 
Parent any environmental liability.

     3.19 BROKERS' AND FINDERS' FEES; THIRD PARTY EXPENSES.  Except as set 
forth on Schedule 3.19, Parent has not incurred, nor will it incur, directly 
or indirectly, any liability for brokerage or finders' fees, investment 
banking fees, consulting fees or agents' commissions or any similar charges 
in connection with this Agreement or any transaction contemplated hereby. 
Schedule 3.19 sets forth the principal terms and conditions of any agreement, 
written or oral, with respect to such fees.  Schedule 3.19 also sets forth 
Parent's current reasonable estimate of all Third Party Expenses (as defined 
in Section 5.4) expected to be incurred by Parent in connection with the 
negotiation and effectuation of the terms and conditions of this Agreement 
and the transactions contemplated hereby.

     3.20 EMPLOYEE MATTERS AND BENEFIT PLANS.

          (a)  DEFINITIONS.  For purposes of this Agreement, the following 
terms shall have the meanings set forth below:

               (i)     "PARENT AFFILIATE" shall mean any other person or 
entity under common control with Parent within the meaning of Section 414(b) 
or (c) and the regulations thereunder.  In addition, for any Parent Employee 
Plan subject to Section 412(n), the term Parent Affiliate shall mean any 
other person or entity under common control with Parent within the meaning of 
Section 414(b), (c), (m) or (o) of the Code;

               (ii)    "PARENT EMPLOYEE PLAN" shall refer to any plan, 
program, policy, practice, contract, agreement or other arrangement providing 
for compensation, severance, termination pay, performance awards, stock or 
stock-related awards, fringe benefits or other employee benefits or 
remuneration of any kind, whether formal or informal, funded or unfunded and 
whether or not legally binding, including without limitation, each "employee 
benefit plan", within the meaning of Section 3(3) of ERISA which is or has 
been maintained, contributed to, or required to be contributed to, by the 
Company or any Parent Affiliate for the benefit of any "Parent Employee" (as 
defined below), and any Parent Employee Plan which has been maintained, 
contributed to, or required to have been contributed to by Parent or any 
Parent Affiliate pursuant to which Parent or any Parent Affiliate has or may 
have any material liability contingent or otherwise;

               (iii)   "PARENT EMPLOYEE" shall mean any current, former, or 
retired employee, officer, or director of Parent or any Parent Affiliate;

               (iv)    "PARENT EMPLOYEE AGREEMENT" shall refer to each 
management, employment, severance, consulting, relocation, repatriation, 
expatriation, visas, work permit or similar agreement or contract between 
Parent or any Parent Affiliate and any Parent Employee or consultant;


                                     36

<PAGE>

               (v)     "PARENT PENSION PLAN" shall refer to each Parent 
Employee Plan which is an "employee pension benefit plan", within the meaning 
of Section 3(2) of ERISA.

               (vi)    "PARENT DEFINED BENEFIT PLAN" shall mean any Pension 
Plan that is a "defined benefit plan," as defined in ERISA Section 3(35).  

          (b)  SCHEDULE.  Schedule 3.20(b) contains an accurate and complete 
list of each Parent Employee Plan and each Parent Employee Agreement together 
with a schedule of all liabilities, whether or not accrued, under each such 
Parent Employee Plan or Parent Employee Agreement only to the extent not 
reflected on the Parent Current Balance Sheet.  Parent does not have any plan 
or commitment, whether legally binding or not, to establish any new Parent 
Employee Plan or Parent Employee Agreement, to modify any Parent Employee 
Plan or Parent Employee Agreement (except to the extent required by law or to 
conform any such Parent Employee Plan or Parent Employee Agreement to the 
requirements of any applicable law, in each case as previously disclosed to 
Parent in writing, or as required by this Agreement), or to enter into any 
Parent Employee Plan or Parent Employee Agreement, nor does it have any 
intention or commitment to do any of the foregoing. 

          (c)  DOCUMENTS. Parent has provided to Company (i) correct and 
complete copies of all nonprivileged documents embodying or materially 
affecting the interpretation or application of each Parent Employee Plan and 
each Parent Employee Agreement including all amendments thereto, and, to the 
Knowledge of the Company, there are no privileged documents pertaining to 
such matters; (ii) the most recent annual actuarial valuations, if any, 
prepared for each Parent Defined Benefit Plan; (iii) the three most recent 
annual reports (Series 5500 and all schedules thereto), if any, required 
under ERISA or the Code in connection with each Parent Employee Plan or 
related trust; (iv) if the Parent Employee Plan is funded, the most recent 
annual and periodic accounting of Parent Employee Plan assets; (v) the most 
recent summary plan description together with the most recent summary of 
material modifications, if any, required under ERISA with respect to each 
Parent Employee Plan which has a material adverse effect on such Parent 
Employee Plan; (vi) the most recent IRS determination, opinion, notification 
or advisory letters as applicable, and rulings relating to Parent Employee 
Plans and copies of all applications and correspondence to or from the IRS or 
the DOL with respect to any Parent Employee Plan; (vii) all communications 
material to any Parent Employee or Parent Employees relating to any Parent 
Employee Plan and any proposed Parent Employee Plans, in each case, relating 
to any amendments, terminations, establishments, increases or decreases in 
benefits, acceleration of payments or vesting schedules or other events which 
would result in any material liability to Parent; and (viii) all registration 
statements and prospectuses prepared in connection with each Parent Employee 
Plan not otherwise publicly available on the SEC website.

          (d)  EMPLOYEE PLAN COMPLIANCE.  Except as set forth on Schedule 
3.20(d), (i) Parent has performed in all material respects all obligations 
required to be performed by it under each Parent Employee Plan, and each 
Parent Employee Plan has been established and maintained in 

                                     37

<PAGE>

all material respects in accordance with its terms and in compliance with all 
applicable laws, statutes, orders, rules and regulations, including but not 
limited to ERISA or the Code; (ii) no "prohibited transaction", within the 
meaning of Section 4975 of the Code or Section 406 of ERISA, has occurred 
with respect to any Parent Employee Plan for which an exemption is not 
applicable; (iii) there are no actions, suits or claims pending, or, to the 
Knowledge of Parent, threatened or anticipated (other than routine claims for 
benefits) against any Parent Employee Plan or against the assets of any 
Parent Employee Plan; and (iv) each Parent Employee Plan can be amended, 
terminated or otherwise discontinued after the Effective Time in accordance 
with its terms, without material liability to the Company, Parent or any 
Parent Affiliates (other than ordinary administration expenses typically 
incurred in a termination event); (v) there are no inquiries or proceedings 
pending or, to the Knowledge of Parent or any Affiliates, threatened by the 
IRS or DOL with respect to any Parent Employee Plan; and (vi) neither Parent 
nor any Parent Affiliate is subject to any material penalty or tax with 
respect to any Parent Employee Plan under Section 502(i) of ERISA or Section 
4975 through 4980 of the Code.

          (e)  PENSION PLANS. Parent does not now, nor has it ever, 
maintained, established, sponsored, participated in, or contributed to, any 
Pension Plan which is subject to Part 3 of Subtitle B of Title I of ERISA, 
Title IV of ERISA or Section 412 of the Code.

          (f)  MULTIEMPLOYER PLANS.  At no time has Parent contributed to or 
been requested to contribute to any Multiemployer Plan.

          (g)  NO POST-EMPLOYMENT OBLIGATIONS.  Except as set forth in 
Schedule 3.20(g), no Parent Employee Plan provides, or has any liability to 
provide, life insurance, medical or other employee welfare benefits to any 
Parent Employee upon his or her retirement or termination of employment for 
any reason, except as may be required by statute, and Parent has never 
represented, promised or contracted (whether in oral or written form) to any 
Parent Employee (either individually or to Employees as a group) that such 
Parent Employee(s) would be provided with life insurance, medical or other 
employee welfare benefits upon their retirement or termination of employment, 
except to the extent required by statute.  The term "other employee welfare 
benefits" means those benefits traditionally provided under an "employee 
benefit welfare plan" as defined in ERISA Section 3(1).  

          (h)  COBRA.  Neither Parent nor any Parent Affiliate has, prior to 
the Effective Time and in any material respect, violated any of the health 
care continuation requirements of COBRA, the requirements of the FMLA or any 
similar provisions of state law applicable to its Parent Employees.  

          (i)  EFFECT OF TRANSACTION.

               (i)     Except as set forth on Schedule 3.20(i)(i), the 
execution of this Agreement and the consummation of the transactions 
contemplated hereby will not (either alone or upon the occurrence of any 
additional or subsequent events) constitute an event under any Parent 

                                     38

<PAGE>

Employee Plan, Parent Employee Agreement, trust or loan that will or may 
result in any payment (whether of severance pay or otherwise), acceleration, 
forgiveness of indebtedness, vesting, distribution, increase in benefits or 
obligation to fund benefits with respect to any Parent Employee.

               (ii)    Except as set forth on Schedule 3.20(i)(ii), no 
payment or benefit which will or may be made by Parent or Company or any of 
their respective affiliates with respect to any Employee will be 
characterized as an "excess parachute payment" within the meaning of Section 
280G(b)(1) of the Code.

          (j)  EMPLOYMENT MATTERS.  Parent (i) is in compliance in all 
material respects with all applicable foreign, federal, state and local laws, 
rules and regulations respecting employment, employment practices, terms and 
conditions of employment and wages and hours, in each case, with respect to 
Parent Employees; (ii) has withheld all amounts required by law or by 
agreement to be withheld from the wages, salaries and other payments to 
Parent Employees; (iii) is not liable for any arrears of wages, other than 
arrears normally included in its payroll schedule and system, or any taxes or 
any penalty for failure to comply with any of the foregoing; and (iv) is not 
liable for any payment to any trust or other fund or to any governmental or 
administrative authority, with respect to unemployment compensation benefits, 
social security or other benefits or obligations for Parent Employees (other 
than routine payments to be made in the normal course of business and 
consistent with past practice).

          (k)  LABOR.  To the Knowledge of Parent, no work stoppage or labor 
strike against Parent is pending or threatened.  Except as set forth in 
Schedule 3.20(k), Parent is not involved in or, to the Knowledge of Parent, 
threatened with, any labor dispute, grievance, or litigation relating to 
labor, safety or discrimination matters involving any Parent Employee, 
including, without limitation, charges of unfair labor practices or 
discrimination complaints, which, if adversely determined, would, 
individually or in the aggregate, result in liability to Parent.  To the 
Knowledge of Parent, neither Parent nor any of its subsidiaries has engaged 
in any unfair labor practices within the meaning of the National Labor 
Relations Act which would, individually or in the aggregate, directly or 
indirectly result in a material liability to Parent.  Except as set forth in 
Schedule 3.20(k), Parent is not presently, nor has it been in the past, a 
party to, or bound by, any collective bargaining agreement or union contract 
with respect to Parent Employees and no collective bargaining agreement is 
being negotiated by Parent.

     3.21 ACCOUNTING AND REGULATORY MATTERS.  Parent has no Knowledge of any 
action taken by Parent or any Affiliate of Parent or agreed to be taken nor 
has any Knowledge of any fact or circumstance that is reasonably likely to 
(a) prevent the Merger from qualifying for pooling-of-interests accounting 
treatment, or (b) materially impede or delay receipt of any consents of 
regulatory authorities referred to in Section 6.1(c), Section 6.1(e) and 
Section 6.1(h) or result in the imposition of a condition or restriction of 
the type referred to in the last sentence of such Section. 

     3.22 REPRESENTATIONS COMPLETE.  None of the representations or 
warranties made by Parent or Merger Sub (as modified by the Parent and Merger 
Sub Schedules), nor any statement made in 


                                     39

<PAGE>

any schedule or certificate furnished by Parent or Merger Sub pursuant to 
this Agreement, or furnished in or in connection with documents mailed or 
delivered to the stockholders of Parent or Merger Sub in connection with 
soliciting their consent to this Agreement and the Merger, contains or will 
contain at the Effective Time, any untrue statement of a material fact, or 
omits or will omit at the Effective Time to state any material fact necessary 
in order to make the statements contained herein or therein, in the light of 
the circumstances under which made, not misleading.


                                   ARTICLE IV

                      CONDUCT PRIOR TO THE EFFECTIVE TIME

     4.1  CONDUCT OF BUSINESS OF THE COMPANY AND PARENT.

          (a)  COMPANY CONDUCT.  During the period from the date of this 
Agreement and continuing until the earlier of the termination of this 
Agreement and the Effective Time, the Company agrees (except to the extent 
that Parent shall otherwise consent in writing or as expressly contemplated 
herein) to carry on its business in the usual, regular and ordinary course in 
substantially the same manner as heretofore conducted, to pay its debts and 
Taxes when due, to pay or perform other obligations when due, and, to the 
extent consistent with such business, to use all reasonable efforts 
consistent with past practice and policies to preserve intact its present 
business organization, keep available the services of its present officers 
and key employees and preserve their relationships with customers, suppliers, 
distributors, licensors, licensees, and others having business dealings with 
it, all with the goal of preserving unimpaired its goodwill and ongoing 
businesses at the Effective Time.  The Company shall promptly notify Parent 
of any material event or occurrence or emergency not in the ordinary course 
of its business, and any material event involving or adversely affecting the 
Company or its business.  Except as expressly contemplated by this Agreement 
and except as set forth on Schedule 4.1(a), the Company shall not, without 
the prior written consent of Parent:

               (i)     Except as set forth in the following subparagraph, 
enter into any commitment, activity or transaction not in the ordinary course 
of business;

               (ii)    Except for ProviderLink Valve-Added Reseller 
Agreements, transfer to any person or entity any rights to any Company 
Intellectual Property Rights (other than pursuant to End-User Licenses in the 
ordinary course of business);

               (iii)   Enter into or amend any agreements pursuant to which 
any other party is granted manufacturing, marketing, distribution or similar 
rights of any type or scope with respect to any products of the Company;


                                     40

<PAGE>

               (iv)    Amend or otherwise modify (or agree to do so), except 
in the ordinary course of business, or violate the terms of, any of the 
agreements set forth or described in the Company Schedules;

               (v)     Commence any litigation;

               (vi)    Declare, set aside or pay any dividends on or make any 
other distributions (whether in cash, stock or property) in respect of any of 
its capital stock, or split, combine or reclassify any of its capital stock 
or issue or authorize the issuance of any other securities in respect of, in 
lieu of or in substitution for shares of capital stock of the Company, or 
repurchase, redeem or otherwise acquire, directly or indirectly, any shares 
of its capital stock (or options, warrants or other rights exercisable 
therefor);

               (vii)   Except as may be required by the SBCL Assets Purchase 
Agreement, for the issuance of shares of Company Capital Stock upon exercise 
or conversion of presently outstanding Company Options or Company Convertible 
Securities and except pursuant to agreements previously entered into and 
agreements that the Company will enter into in connection with the employment 
of non-officer employees, issue, grant, deliver or sell or authorize or 
propose the issuance, grant, delivery or sale of, or purchase or propose the 
purchase of, any shares of its capital stock or securities convertible into, 
or subscriptions, rights, warrants or options to acquire, or other agreements 
or commitments of any character obligating it to issue any such shares or 
other convertible securities;

               (viii)  Cause or permit any amendments to its Articles of 
Incorporation or Bylaws;

               (ix)    Except as may be required by the SBCL Assets Purchase 
Agreement, acquire or agree to acquire by merging or consolidating with, or 
by purchasing any assets or equity securities of, or by any other manner, any 
business or any corporation, partnership, association or other business 
organization or division thereof, or otherwise acquire or agree to acquire 
any assets which are material, individually or in the aggregate, to the 
business of the Company;

               (x)     Sell, lease, license or otherwise dispose of any of 
its properties or assets, except in the ordinary course of business and 
consistent with past practice;

               (xi)    Incur any indebtedness for borrowed money or guarantee 
any such indebtedness or issue or sell any debt securities of the Company or 
guarantee any debt securities of others;

               (xii)   Grant any severance or termination pay to any 
director, officer, employee or consultant, except payments (a) required by 
law or, (b) with respect to non-officer employees and consultants (i) made 
pursuant to written agreements outstanding on the date hereof 


                                     41

<PAGE>

(which such agreements are disclosed on Schedule 4.1(a)(xii)), or (ii) 
pursuant to Company policy in effect on the date hereof;

               (xiii)  Adopt or amend any employee benefit plan, program, 
policy or arrangement, or enter into any employment contract, extend any 
employment offer, pay or agree to pay any special bonus or special 
remuneration to any director, employee or consultant, or increase the 
salaries or wage rates of its employees other than in the ordinary course of 
business and consistent with past practice;

               (xiv)   Except as required by the acquisition of assets 
pursuant to the SBCL Assets Purchase Agreement, revalue any of its assets, 
including without limitation writing down the value of inventory or writing 
off notes or accounts receivable other than in the ordinary course of 
business and consistent with past practice;

               (xv)    Take any action, including the acceleration of vesting 
of any options, warrants, restricted stock or other rights to acquire shares 
of the capital stock of the Company which would be reasonably likely to 
interfere with Parent's ability to account for the Merger as a pooling of 
interests or any other action that could jeopardize the tax-free 
reorganization hereunder; 

               (xvi)   Pay, discharge or satisfy, in an amount in excess of 
$15,000, in any one case, or $50,000, in the aggregate, any claim, liability 
or obligation (absolute, accrued, asserted or unasserted, contingent or 
otherwise), other than the payment, discharge or satisfaction in the ordinary 
course of business of liabilities reflected or reserved against in the 
Company Financial Statements or incurred in the ordinary course of business 
since December 31, 1997;

               (xvii)  Make or change any material election in respect of 
Taxes, adopt or change any accounting method in respect of Taxes, enter into 
any closing agreement, settle any claim or assessment in respect of Taxes, or 
consent to any extension or waiver of the limitation period applicable to any 
claim or assessment in respect of Taxes;

               (xviii) Enter into any strategic alliance, joint development 
or joint marketing arrangement or agreement;

               (xix)   Fail to pay or otherwise satisfy its monetary 
obligations as they become due, except such as are being contested in good 
faith;

               (xx)    Waive or commit to waive any rights with a value in 
excess of $10,000, in any one case, or $25,000, in the aggregate;

               (xxi)   Cancel, materially amend or renew any insurance policy 
other than in the ordinary course of business;


                                     42

<PAGE>

               (xxii)  Alter, or enter into any commitment to alter, its 
interest in any corporation, association, joint venture, partnership or 
business entity in which the Company directly or indirectly holds any 
interest on the date hereof; or

               (xxiii) Take, or agree in writing or otherwise to take, any of 
the actions described in Sections 4.1(i) through (xxii) above, or any other 
action that would prevent the Company from performing or cause the Company 
not to perform its covenants hereunder.

          (b)  PARENT CONDUCT.  During the period from the date of this 
Agreement and continuing until the earlier of the termination of this 
Agreement and the Effective Time, Parent agrees (except to the extent that 
Company shall otherwise consent in writing or as expressly contemplated 
herein) to carry on its business in the usual, regular and ordinary course in 
substantially the same manner as heretofore conducted, to pay its debts and 
Taxes when due, to pay or perform other obligations when due, and, to the 
extent consistent with such business, to use all reasonable efforts 
consistent with past practice and policies to preserve intact its present 
business organization, keep available the services of its present officers 
and key employees and preserve their relationships with customers, suppliers, 
distributors, licensors, licensees, and others having business dealings with 
it, all with the goal of preserving unimpaired its goodwill and ongoing 
businesses at the Effective Time. Parent shall promptly notify the Company of 
any material event or occurrence or emergency not in the ordinary course of 
its business, and any material event involving or adversely affecting Parent 
or its business.  Except as expressly contemplated by this Agreement and 
except as set forth on Schedule 4.1(b), Parent shall not, without the prior 
written consent of the Company:

               (i)     Enter into any commitment, activity or transaction not 
in the ordinary course of business.

               (ii)    Transfer to any person or entity any rights to any 
Parent Intellectual Property Rights (other than pursuant to End-User Licenses 
in the ordinary course of business);

               (iii)   Enter into or amend any agreements pursuant to which 
any other party is granted manufacturing, marketing, distribution or similar 
rights of any type or scope with respect to any products of Parent;

               (iv)    Amend or otherwise modify (or agree to do so), except 
in the ordinary course of business, or violate the terms of, any of the 
agreements set forth or described in the Parent and Merger Sub Schedules;

               (v)     Commence any litigation;

               (vi)    Declare, set aside or pay any dividends on or make any 
other distributions (whether in cash, stock or property) in respect of any of 
its capital stock, or split, combine or reclassify any of its capital stock 
or issue or authorize the issuance of any other securities in respect of, in 
lieu of or in substitution for shares of capital stock of Parent, or 
repurchase, redeem


                                     43


<PAGE>

or otherwise acquire, directly or indirectly, any shares of its capital stock 
(or options, warrants or other rights exercisable therefor);

               (vii)  Except for the issuance of shares of Parent capital 
stock upon exercise or conversion of presently outstanding Parent Convertible 
Securities and except pursuant to agreements previously entered into and 
agreements that Parent will enter into in connection with the employment of 
non-officer employees, issue, grant, deliver or sell or authorize or propose 
the issuance, grant, delivery or sale of, or purchase or propose the purchase 
of, any shares of its capital stock or securities convertible into, or 
subscriptions, rights, warrants or options to acquire, or other agreements or 
commitments of any character obligating it to issue any such shares or other 
convertible securities;

               (viii) Cause or permit any amendments to its Certificate of 
Incorporation or Bylaws;

               (ix)   Acquire or agree to acquire by merging or consolidating 
with, or by purchasing any assets or equity securities of, or by any other 
manner, any business or any corporation, partnership, association or other 
business organization or division thereof, or otherwise acquire or agree to 
acquire any assets which are material, individually or in the aggregate, to 
the business of Parent;

               (x)    Sell, lease, license or otherwise dispose of any of its 
properties or assets, except in the ordinary course of business and 
consistent with past practice;

               (xi)   Incur any indebtedness for borrowed money or guarantee 
any such indebtedness or issue or sell any debt securities of Parent or 
guarantee any debt securities of others;

               (xii)  Grant any severance or termination pay to any director, 
officer, employee or consultant, except payments (a) required by law or, (b) 
with respect to non-officer employees and consultants (i) made pursuant to 
written agreements outstanding on the date hereof (which such agreements are 
disclosed on Schedule 4.1(b)(xii)), or (ii) pursuant to Parent policy in 
effect on the date hereof;

               (xiii) Adopt or amend any employee benefit plan, program, 
policy or arrangement, or enter into any employment contract, extend any 
employment offer, pay or agree to pay any special bonus or special 
remuneration to any director, employee or consultant, or increase the 
salaries or wage rates of its employees other than in the ordinary course of 
business and consistent with past practice;

               (xiv)  Revalue any of its assets, including without limitation 
writing down the value of inventory or writing off notes or accounts 
receivable other than in the ordinary course of business and consistent with 
past practice;


                                      44


<PAGE>

               (xv)    Take any action, including the acceleration of vesting 
of any options, warrants, restricted stock or other rights to acquire shares 
of the capital stock of Parent which would be reasonably likely to interfere 
with Parent's ability to account for the Merger as a pooling of interests or 
any other action that could jeopardize the tax-free reorganization hereunder; 

               (xvi)   Pay, discharge or satisfy, in an amount in excess of 
$15,000, in any one case, or $50,000, in the aggregate, any claim, liability 
or obligation (absolute, accrued, asserted or unasserted, contingent or 
otherwise), other than the payment, discharge or satisfaction in the ordinary 
course of business of liabilities reflected or reserved against in the Parent 
Financial Statements or incurred in the ordinary course of business since 
December 31, 1997;

               (xvii)  Make or change any material election in respect of 
Taxes, adopt or change any accounting method in respect of Taxes, enter into 
any closing agreement, settle any claim or assessment in respect of Taxes, or 
consent to any extension or waiver of the limitation period applicable to any 
claim or assessment in respect of Taxes;

               (xviii) Enter into any strategic alliance, joint development 
or joint marketing arrangement or agreement; 

               (xix)   Fail to pay or otherwise satisfy its monetary 
obligations as they become due, except such as are being contested in good 
faith;

               (xx)    Waive or commit to waive any rights with a value in 
excess of $10,000, in any one case, or $25,000, in the aggregate;

               (xxi)   Cancel, materially amend or renew any insurance policy 
other than in the ordinary course of business;

               (xxii)  Alter, or enter into any commitment to alter, its 
interest in any corporation, association, joint venture, partnership or 
business entity in which Parent directly or indirectly holds any interest on 
the date hereof; or

               (xxiii) Take, or agree in writing or otherwise to take, any of 
the actions described in Sections 4.1(i) through (xxii) above, or any other 
action that would prevent Parent from performing or cause Parent not to 
perform its covenants hereunder.

     4.2  NO COMPANY SOLICITATION.  Until the earlier of the Effective Time and
the date of termination of this Agreement pursuant to the provisions of Section
8.1 hereof, the Company will not (nor will the Company permit any of the
Company's officers, directors, shareholders, agents, representatives or
Affiliates to) directly or indirectly, take any of the following actions with
any party other than Parent and its designees:  (a) solicit, initiate,
entertain, or encourage any proposals or offers from, or conduct discussions
with or engage in negotiations with, any person relating to any possible
acquisition of the Company or any of its subsidiaries (whether by way of merger,
purchase 


                                      45


<PAGE>

of capital stock, purchase of assets or otherwise), any material portion of 
its or their capital stock or assets or any equity interest in the Company or 
any of its subsidiaries, (b) provide information with respect to it to any 
person, other than Parent, relating to, or otherwise cooperate with, 
facilitate or encourage any effort or attempt by any such person with regard 
to, any possible acquisition of the Company (whether by way of merger, 
purchase of capital stock, purchase of assets or otherwise), any material 
portion of its or their capital stock or assets or any equity interest in the 
Company or any of its subsidiaries, (c) enter into an agreement with any 
person, other than Parent, providing for the acquisition of the Company 
(whether by way of merger, purchase of capital stock, purchase of assets or 
otherwise), any material portion of its or their capital stock or assets or 
any equity interest in the Company or any of its subsidiaries, or (d) make or 
authorize any statement, recommendation or solicitation in support of any 
possible acquisition of the Company or any of its subsidiaries (whether by 
way of merger, purchase of capital stock, purchase of assets or otherwise), 
any material portion of its or their capital stock or assets or any equity 
interest in the Company or any of its subsidiaries by any person, other than 
by Parent.  The Company shall immediately cease and cause to be terminated 
any such contacts or negotiations with third parties relating to any such 
transaction or proposed transaction.  In addition to the foregoing, if the 
Company receives prior to the Effective Time or the termination of this 
Agreement any offer or proposal relating to any of the above, the Company 
shall immediately notify Parent thereof, including information as to the 
identity of the offeror or the party making any such offer or proposal and 
the specific terms of such offer or proposal, as the case may be, and such 
other information related thereto as Parent may reasonably request. Except as 
contemplated by this Agreement, disclosure by the Company of the terms hereof 
(other than the prohibition of this section) shall be deemed to be a 
violation of this Section 4.2.

     4.3  NO PARENT OR MERGER SUB SOLICITATION.  Until the earlier of the 
Effective Time and the date of termination of this Agreement pursuant to the 
provisions of Section 8.1 hereof, Parent and Merger Sub will not (nor will 
Parent or Merger Sub permit any of their officers, directors, stockholders, 
agents, representatives or Affiliates to) directly or indirectly, take any of 
the following actions with any party other than the Company and its 
designees: (a) solicit, initiate, entertain, or encourage any proposals or 
offers from, or conduct discussions with or engage in negotiations with, any 
person relating to any possible acquisition of Parent or any of its 
subsidiaries (whether by way of merger, purchase of capital stock, purchase 
of assets or otherwise), any material portion of its or their capital stock 
or assets or any equity interest in Parent or any of its subsidiaries, (b) 
provide information with respect to it to any person, other than the Company, 
relating to, or otherwise cooperate with, facilitate or encourage any effort 
or attempt by any such person with regard to, any possible acquisition of 
Parent (whether by way of merger, purchase of capital stock, purchase of 
assets or otherwise), any material portion of its or their capital stock or 
assets or any equity interest in Parent or any of its subsidiaries, (c) enter 
into an agreement with any person providing for the acquisition of Parent 
(whether by way of merger, purchase of capital stock, purchase of assets or 
otherwise), any material portion of its or their capital stock or assets or 
any equity interest in Parent or any of its subsidiaries, or (d) make or 
authorize any statement, recommendation or solicitation in support of any 
possible acquisition of Parent or any of its subsidiaries (whether by way of 
merger, purchase of capital stock, purchase of assets or otherwise), any 
material portion of its or their capital stock or assets or any equity 
interest in Parent or any of its subsidiaries by any person. Parent shall 


                                      46


<PAGE>

immediately cease and cause to be terminated any such contacts or 
negotiations with third parties relating to any such transaction or proposed 
transaction.  In addition to the foregoing, if Parent receives prior to the 
Effective Time or the termination of this Agreement any offer or proposal 
relating to any of the above, Parent shall immediately notify the Company 
thereof, including information as to the identity of the offeror or the party 
making any such offer or proposal and the specific terms of such offer or 
proposal, as the case may be, and such other information related thereto as 
the Company may reasonably request.  Except as contemplated by this 
Agreement, disclosure by Parent of the terms hereof (other than the 
prohibition of this section) shall be deemed to be a violation of this 
Section 4.3.


                                      ARTICLE V

                                ADDITIONAL AGREEMENTS

     5.1  CALIFORNIA PERMIT; COMPANY SHAREHOLDER AND PARENT STOCKHOLDER 
          APPROVALS.

          (a)  As soon as reasonably practical following the execution of 
this Agreement, Parent and the Company will prepare the necessary 
documentation to obtain a permit (a "CALIFORNIA PERMIT") from the 
Commissioner of Corporations of the State of California (after a hearing 
before such Department) pursuant to Section 25121 of the California Corporate 
Securities Law of 1968, so that the issuance of Parent Common Stock in the 
Merger shall be exempt from registration under Section 3(a)(10) of the 
Securities Act of 1933, as amended (the "SECURITIES ACT").  The Company and 
Parent will respond to any comments from the California Department of 
Corporations and use their commercially reasonable efforts to have the 
California Permit granted as soon as practical after such filing.  As 
promptly as practical after the date of this Agreement, Parent and the 
Company shall prepare and make such filings as are required under applicable 
Blue Sky laws relating to the transactions contemplated by this Agreement.

          (b)  As promptly as practicable after the receipt of a California 
Permit, the Company shall submit this Agreement and the transactions 
contemplated hereby, including without limitation the Merger, to the 
Company's shareholders for approval as provided by Georgia Law and the 
Company's Articles of Incorporation and Bylaws. The materials submitted to 
the Company's shareholders shall be subject to review and approval by Parent 
and include information regarding Parent and the Company, the terms of the 
Merger and this Agreement and the unanimous recommendation of the Board of 
Directors of the Company in favor of the Merger, this Agreement and the 
transactions contemplated hereby.

          (c)  As promptly as practicable after receipt of a California 
Permit, Parent shall submit this Agreement and the transactions contemplated 
hereby, including without limitation the Merger, to Parent's stockholders for 
approval and adoption as provided by Delaware law, California law and 
Parent's Certificate of Incorporation and Bylaws.  The materials submitted to 
Parent's 


                                      47


<PAGE>

stockholders shall include the unanimous recommendation of the Board of 
Directors of Parent in favor of the Merger, this Agreement and the 
transactions contemplated hereby.

     5.2  ACCESS TO INFORMATION.  Each party shall afford the others and its 
accountants, counsel and other representatives, reasonable access during 
normal business hours during the period prior to the Effective Time to (a) 
all of its properties, books, contracts, commitments and records, and (b) all 
other information concerning the business, properties and personnel (subject 
to restrictions imposed by applicable law) of it as the others may reasonably 
request, subject, in the case of Parent, to reasonable limits on access to 
its technical and other nonpublic information.  No information or knowledge 
obtained in any investigation pursuant to this Section 5.2 shall affect or be 
deemed to modify any representation or warranty contained herein.

     5.3  CONFIDENTIALITY.  Each of the parties hereto hereby agrees to keep 
the terms of this Agreement (except to the extent contemplated hereby) and 
such information or knowledge obtained in any investigation pursuant to 
Section 5.2, or pursuant to the negotiation and execution of this Agreement 
or the effectuation of the transactions contemplated hereby, confidential; 
provided, however, that the foregoing shall not apply to information or 
knowledge which (a) a party can demonstrate was already lawfully in its 
possession prior to the disclosure thereof by the other party, (b) is 
generally known to the public and did not become so known through any 
violation of law, (c) became known to the public through no fault of such 
party, (d) is later lawfully acquired by such party without confidentiality 
restrictions from other sources, (e) is required to be disclosed by order of 
court or government agency with subpoena powers (provided that such party 
shall have provided the other party with prior notice of such order or 
subpoena and an opportunity to object or take other available action) or (f) 
which is disclosed in the course of any litigation between any of the parties 
hereto.

     5.4  EXPENSES.  Whether or not the Merger is consummated, all fees and 
expenses incurred in connection with the Merger including, without 
limitation, all legal, accounting, financial advisory, consulting and all 
other fees and expenses of third parties ("THIRD PARTY EXPENSES") incurred by 
a party in connection with the negotiation and effectuation of the terms and 
conditions of this Agreement and the transactions contemplated hereby, shall 
be the obligation of the respective party incurring such fees and expenses.

     5.5  PUBLIC DISCLOSURE.  Unless otherwise required by law (including, 
without limitation, federal and state securities laws) prior to the Effective 
Time, no disclosure (whether or not in response to an inquiry) of the subject 
matter of this Agreement shall be made by any party hereto unless approved by 
Parent and the Company prior to release, provided that such approval shall 
not be unreasonably withheld.

     5.6  CONSENTS.  Parent and the Company shall use commercially reasonable 
efforts to obtain the consents, waivers and approvals under any of the Parent 
Contracts and Company Contracts as may be required in connection with the 
Merger (all of such consents, waivers and 


                                      48


<PAGE>

approvals are set forth in the Company Schedules and Parent and Merger Sub 
Schedules) so as to preserve all rights of and benefits to the Parent and 
Company thereunder.

     5.7  FIRPTA COMPLIANCE.  On or prior to the Closing Date, the Company 
shall deliver to Parent a properly executed statement in a form reasonably 
acceptable to Parent for purposes of satisfying Parent's obligations under 
Treasury Regulation Section 1.1445-2(c)(3).

     5.8  REASONABLE EFFORTS.  Subject to the terms and conditions provided 
in this Agreement, each of the parties hereto shall use its reasonable 
efforts to ensure that its representations and warranties remain true and 
correct in all material respects, and to take promptly, or cause to be taken, 
all actions, and to do promptly, or cause to be done, all things necessary, 
proper or advisable under applicable laws and regulations to consummate and 
make effective the transactions contemplated hereby, to obtain all necessary 
waivers, consents and approvals, to effect all necessary registrations and 
filings, and to remove any injunctions or other impediments or delays, legal 
or otherwise, in order to consummate and make effective the transactions 
contemplated by this Agreement for the purpose of securing to the parties 
hereto the benefits contemplated by this Agreement; provided that Parent 
shall not be required to agree to any divestiture by Parent or the Company or 
any of Parent's subsidiaries or affiliates of shares of capital stock or of 
any business, assets or property of Parent or its subsidiaries or affiliates 
or the Company or its affiliates, or the imposition of any material 
limitation on the ability of any of them to conduct their businesses or to 
own or exercise control of such assets, properties and stock.

     5.9  NOTIFICATION OF CERTAIN MATTERS.  The Company shall give prompt 
notice to Parent, and Parent shall give prompt notice to the Company, of (i) 
the occurrence or non-occurrence of any event, the occurrence or 
non-occurrence of which is likely to cause any representation or warranty of 
the Company, Parent or Merger Sub, respectively, contained in this Agreement 
to be untrue or inaccurate at or prior to the Effective Time and (ii) any 
failure of the Company or Parent, as the case may be, to comply with or 
satisfy any covenant, condition or agreement to be complied with or satisfied 
by it hereunder; provided, however, that the delivery of any notice pursuant 
to this Section 5.9 shall not limit or otherwise affect any remedies 
available to the party receiving such notice.

     5.10 CERTAIN BENEFIT PLANS.  Subject to compliance with 
pooling-of-interest accounting treatment of the Merger, Parent shall take 
such reasonable actions as are necessary to allow eligible employees of the 
Company to participate in the benefit programs of Parent, or alternative 
benefits programs substantially comparable to those applicable to employees 
of Parent on similar terms, as soon as practicable after the Effective Time.  
For purposes of participation, vesting and benefit accrual under Parent's 
employee benefit plans, the service of the employees of the Company prior to 
the Effective Time shall be treated as service with Parent.  Parent shall 
cause the Surviving Corporation to honor in accordance with their terms all 
employment, severance, consulting and other compensation Contracts disclosed 
in the Company Schedules between the Company and any current or former 
director, officer or employee thereof, and all provisions for vested benefits 
or other vested amounts earned or accrued through the Effective Time under 
the Company Benefit Plans.


                                      49


<PAGE>

     5.11 ACCOUNTING AND TAX TREATMENT.  Each of the Parties undertakes and 
agrees to use its reasonable efforts to cause the Merger, and to take no 
action which would cause the Merger not, to qualify for treatment as a 
pooling of interests for accounting purposes and each of the Parties agrees 
to take no action which would cause the Merger not to qualify as a 
"reorganization" within the meaning of Section 368(a) of the Internal Revenue 
Code for federal income tax purposes.  

     5.12 ADDITIONAL DOCUMENTS AND FURTHER ASSURANCES.  Each party hereto, at 
the request of the other party hereto, shall execute and deliver such other 
instruments and do and perform such other acts and things as may be necessary 
or desirable for effecting completely the consummation of this Agreement and 
the transactions contemplated hereby.

     5.13 COMPANY'S AUDITORS.  The Company will use its commercially 
reasonable efforts to cause its management and its independent auditors to 
facilitate on a timely basis (i) the review of any Company audit or review 
work papers for up to the past three years, including the examination of 
selected interim financial statements and data and (ii) the delivery of such 
representations from the Company's independent accountants as may be 
reasonably requested by Parent or its accountants in order for Parent's 
accountants to render the opinion called for by Section 6.1(l) hereof. 

     5.14 PARENT'S AUDITORS.  Parent will use its commercially reasonable 
efforts to cause its management and its independent auditors to facilitate on 
a timely basis (i) the review of any Parent audit or review work papers for 
up to the past three years, including the examination of selected interim 
financial statements and data and (ii) the delivery of such representations 
from Parent's independent accountants as may be reasonably requested by the 
Company or its accountants in order for Company's accountants to render the 
opinion called for by Section 6.1(l) hereof. 

     5.15 AGREEMENT OF AFFILIATES.  Each Party has disclosed in Schedule 5.15 
of its Schedules all Persons whom it reasonably believes is an Affiliate.  If 
the Merger is accounted for using the pooling-of-interests method of 
accounting, shares of Parent Common Stock held by such Persons shall not be 
transferable until such time as financial results covering at least 30 days 
of combined operations of Parent and the Company have been published within 
the meaning of Section 201.01 of the SEC's Codification of Financial 
Reporting Policies, regardless of whether each such Affiliate has provided 
the Voting Agreement (and Parent shall be entitled to place restrictive 
legends upon certificates for shares of Parent Common Stock issued to 
Affiliates of the Company pursuant to this Agreement to enforce the 
provisions of this Section 5.14).

     5.16 AMENDMENT OF PARENT BYLAWS.  Parent shall take all necessary 
corporate actions, including without limitation soliciting stockholder 
approval (including the unanimous recommendation of Parent's Board of 
Directors in favor thereof), to increase the authorized number of directors 
to eight.

     5.17 INDEMNIFICATION.


                                      50


<PAGE>

          (a)  For a period of three years after the Effective Time, Parent 
shall, and shall cause the Surviving Corporation to, indemnify, defend and 
hold harmless the present and former directors, officers, employees and 
agents of the Company (each, an "INDEMNIFIED PARTY") against all liabilities 
arising out of actions or omissions arising out of the Indemnified Party's 
service or services as directors, officers, employees or agents of the 
Company, ShareNet, EDI Services, Inc. or as a trustee of the Company's 401(K) 
plans(s) occurring at or prior to the Effective Time (including the 
transactions contemplated by this Agreement) to the fullest extent permitted 
under Delaware law (or, in the event Georgia law is more restrictive with 
respect to indemnification, then under Georgia law) and by the Company's 
Articles of Incorporation and Bylaws as in effect on the date hereof, 
including provisions relating to advances of expenses incurred in the defense 
of any litigation and whether or not Parent is insured against any such 
matter.  Without limiting the foregoing, in any case in which approval by the 
Surviving Corporation is required to effectuate any indemnification, the 
Surviving Corporation shall direct, at the election of the Indemnified Party, 
that the determination of any such approval shall be made by independent 
counsel mutually and reasonably agreed upon between Parent and the 
Indemnified Party.

          (b)  This Section 5.17 shall survive the Effective Time and is 
intended to benefit the Company, the Surviving Corporation and each of the 
Indemnified Parties and his or her heirs and representatives (each of whom 
shall be entitled to enforce this Section 5.17 against Parent or the 
Surviving Corporation, as the case may be) and shall be binding upon all 
successors and assigns (whether by operation of law or by contract) of Parent 
and the Surviving Corporation.


                                      ARTICLE VI

                               CONDITIONS TO THE MERGER

     6.1  CONDITIONS TO OBLIGATIONS OF EACH PARTY TO EFFECT THE MERGER.  The 
respective obligations of each party to this Agreement to effect the Merger 
shall be subject to the satisfaction at or prior to the Closing of the 
following conditions:

          (a)  COMPANY SHAREHOLDER APPROVAL.  This Agreement and the Merger 
shall have been approved by the shareholders of the Company by the requisite 
vote under applicable law and the Company's Articles of Incorporation and 
Bylaws.  

          (b)  PARENT STOCKHOLDER APPROVAL.  This Agreement and the Merger 
(including any amendments to Parent's Certificate of Incorporation reasonably 
necessary to consummate the transactions contemplated by this Agreement) 
shall have been approved and adopted by the stockholders of Parent by the 
requisite vote under applicable law and Parent's Certificate of Incorporation 
and Bylaws.

          (c)  CALIFORNIA PERMIT.  The Commissioner of Corporations for the 
State of California shall have approved the terms and conditions of the 
transactions contemplated by this 


                                      51


<PAGE>

Agreement, and the fairness of such terms and conditions pursuant to Section 
25142 of the California Corporations Code ("CALIFORNIA CODE") following a 
hearing for such purpose, and shall have issued a Permit under Section 25121 
of the California Code.

          (d)  NO INJUNCTIONS OR RESTRAINTS; ILLEGALITY.  No temporary 
restraining order, preliminary or permanent injunction or other order issued 
by any court of competent jurisdiction or other legal or regulatory restraint 
or prohibition preventing the consummation of the Merger shall be in effect.

          (e)  HSR ACT CLEARANCE.   All approvals shall have been received 
and the expiration or early termination under the Hart-Scott-Rodino Antitrust 
Improvements Act of 1976, as amended, (the "HSR ACT"), and other applicable 
antitrust laws ("HSR CLEARANCE"); provided that, neither party may rely on 
the condition set forth in this Section 6.1(e) if the failure to obtain HSR 
Clearance for the Merger is a result of such party's failure to take 
commercially reasonable efforts to obtain HSR Clearance.  

          (f)  TAX OPINIONS.  Parent shall have received a written opinion 
from its counsel, Wilson Sonsini Goodrich & Rosati, Professional Corporation, 
and the Company shall have received a written opinion from its counsel, 
Alston & Bird LLP (substantially identical to the opinion received by 
Parent), to the effect that the Merger will constitute a reorganization 
within the meaning of Section 368(a) of the Code; provided, however, that if 
Company counsel does not render such opinion, this condition shall 
nonetheless be deemed to be satisfied if Parent's counsel renders its opinion 
to the Company as well as to Parent.  The parties to this Agreement agree to 
make reasonable representations (and to cause their Affiliates to make 
reasonable representations) as requested by counsel for the purpose of 
rendering the opinions discussed herein.

          (g)  INVESTORS' RIGHTS AGREEMENT.  The Investors' Rights Agreement, 
dated as of October 14, 1997, as amended (the "INVESTORS' RIGHTS AGREEMENT"), 
by and between Parent and certain holders of Parent's securities shall have 
been amended and executed by Parent, the shareholders of the Company who 
possess registration rights pursuant to written agreements existing on the 
date hereof with respect to certain securities of the Company, and a 
sufficient number of the existing holders of registration rights with respect 
to Parent's securities in order to permit the granting of such rights under 
the Investors' Rights Agreement.

          (h)  OTHER GOVERNMENTAL APPROVALS.  All approvals from government 
authorities, including without limitation any requisite Blue Sky approvals, 
which are appropriate or necessary for the consummation of the Merger, shall 
have been obtained.

          (i)  LITIGATION.  There shall be no BONA FIDE action, suit, claim 
or proceeding of any nature pending, or overtly threatened, against Parent or 
the Company, their respective properties or any of their officers or 
directors, arising out of, or in any way connected with, the Merger or other 
transactions contemplated by the terms of this Agreement.


                                      52


<PAGE>

          (j)  CONSENTS AND APPROVALS.  Each Party shall have obtained any 
and all consents required for consummation of the Merger or for the 
preventing of any Default under any Contract or Permit of such Party which, 
if not obtained or made, is reasonably likely to have, individually or in the 
aggregate, a Company Material Adverse Effect or a Parent Material Adverse 
Effect, as applicable.  No consent so obtained which is necessary to 
consummate the transactions contemplated hereby shall be conditioned or 
restricted in a manner which in the reasonable judgment of the Board of 
Directors of either party would so materially adversely impact the economic 
or business benefits of the transactions contemplated by this Agreement that, 
had such condition or requirement been known, such party would not, in its 
reasonable judgment, have entered into this Agreement.

          (k)  AGREEMENT WITH SBCL.  Sections 1.5 through 1.8 of the SBCL 
Assets Purchase Agreement shall be amended to provide for payment of the 
Purchase Price (as that term is defined therein) with Parent Common Stock for 
any payment due on any Transfer Date (as that term is defined therein) which 
occurs following the Effective Time, and the parties shall obtain such other 
amendments and waivers to such agreement as may be reasonably necessary to 
accomplish the objectives of the Merger.

          (l)  POOLING LETTERS.  Each of Parent and Company shall have 
received letters, dated as of the Effective Time, from Ernst & Young LLP 
regarding such firm's concurrence with Parent's managements' and Company's 
managements' conclusions as to the appropriateness of pooling-of-interests 
accounting for the Merger under Accounting Principles Board Opinion No. 16 if 
the Merger is consummated in accordance with this Agreement.

          (m)  VOTING AGREEMENTS.  Each of the persons and entities listed on 
Exhibit A and Exhibit B to the Voting Agreement set forth in EXHIBIT D 
hereto, shall have executed and delivered such Voting Agreements in 
substantially the form set forth in EXHIBIT D. 

          (n)  AFFILIATE AGREEMENTS.  Each of the persons and entities listed 
as Affiliates of Parent on Schedule 5.14 shall have executed and delivered 
Affiliate Agreements in substantially the form of EXHIBIT C, and each of the 
persons and entities listed as Affiliates of the Company on Schedule 5.14 
shall have executed and delivered Affiliate Agreements in substantially the 
form of EXHIBIT E, and all such Affiliate Agreements shall be in full force 
and effect.  

     6.2  ADDITIONAL CONDITIONS TO OBLIGATIONS OF THE COMPANY.  The 
obligations of the Company to consummate the Merger and the transactions 
contemplated by this Agreement shall be subject to the satisfaction at or 
prior to the Closing of each of the following conditions, any of which may be 
waived, in writing, exclusively by the Company:

          (a)  REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of Parent and Merger Sub contained in this Agreement shall be true 
and correct in all material respects on and as of the Closing Date, except 
for changes contemplated by this Agreement and except for those 
representations and warranties which address matters only as of a particular 
date (which shall remain true and correct as of such date), with the same 
force and effect as if made on and as of the Closing 


                                      53


<PAGE>

Date, except for those representations and warranties that are qualified by 
references to "material" or "Material Adverse Effect" which all shall be true 
and correct in all respects, and except, in all such cases, for such 
breaches, inaccuracies or omissions of such representations and warranties 
which have neither had nor reasonably would be expected to have a Material 
Adverse Effect on Parent; and the Company shall have received a certificate 
to such effect signed on behalf of Parent by a duly authorized officer of 
Parent.

          (b)  AGREEMENTS AND COVENANTS.  Parent and Merger Sub shall have 
performed or complied in all material respects with all agreements and 
covenants required by this Agreement to be performed or complied with by them 
on or prior to the Effective Time, and the Company shall have received a 
certificate to such effect signed by a duly authorized officer of Parent.

          (c)  EXCHANGE AGENT CERTIFICATION.  The Exchange Agent shall have 
delivered to the Company a certificate, dated as of the Effective Time, to 
the effect that the Exchange Agent has received from Parent appropriate 
instructions and authorization for the Exchange Agent to issue a sufficient 
number of shares of Parent Common Stock in exchange for outstanding shares of 
Company Common Stock and that Parent has deposited with the Exchange Agent 
sufficient funds to pay a reasonable estimate of the cash payments necessary 
to make all fractional share payments as required by Section 1.6(f).

          (d)  LEGAL OPINION.  The Company shall have received a legal 
opinion from Wilson Sonsini Goodrich & Rosati, Professional Corporation, 
counsel to Parent, in form and substance reasonably acceptable to counsel of 
Company.

          (e)  MATERIAL ADVERSE CHANGE.  There shall not have occurred any 
material adverse change in the business, assets (including intangible 
assets), liabilities, financial condition or results of operations of Parent 
since the date of the Parent Current Balance Sheet.

          (f)  CONVERSION OF PREFERRED STOCK.  All shares of Parent Preferred 
Stock, other than shares of Parent Series D Preferred Stock, shall have 
converted into Parent Common Stock in accordance with the Parent's 
Certificate of Incorporation; provided, however, if the Company so requests, 
shares of Parent Series D Preferred Stock shall have also converted to Parent 
Common Stock.

          (g)  BOARD OF DIRECTORS.  Parent shall have amended its Bylaws so 
as to increase the number of Directors on its Board of Directors from four to 
eight.   Parent shall have taken all corporate actions to ensure that 
immediately upon the Closing, the Board of Directors of Parent consists of 
Jim Clark, John Doerr, Richard Kramlich, W. Michael Long, P. E. Sadler, 
Michael K. Hoover, Tadakata Yamada and one other person to be designated by 
the Company prior to the Closing Date.  

          (h)  INDEMNIFICATION.  The Articles of Incorporation of Merger Sub 
shall contain officer and director indemnification provisions that are 
substantially similar to the officer and 


                                      54


<PAGE>

director indemnification provisions contained in the Company's Articles of 
Incorporation in the form delivered to Parent on the date of this Agreement. 

          (i)  DUE DILIGENCE INVESTIGATION.  Company shall have completed its 
due diligence investigation of Parent to Company's reasonable satisfaction, 
provided that no information or knowledge obtained in such investigation 
shall affect or be deemed to modify any representation or warranty of Parent 
contained herein.  In this regard, Company's due diligence investigation 
shall be conclusively deemed to have been completed to Company's reasonable 
satisfaction in the event that the preliminary Parent Schedules attached 
hereto are not subsequently modified, or otherwise do not require subsequent 
modification in order to make Parent's representations and warranties true 
and correct in all material respects on and as of the Closing Date.

          (j)  PARENT 1997 FINANCIAL STATEMENTS.  Parent shall have completed 
and delivered to the Company a copy of its audited financial statements for 
the year ended December 31, 1997.

     6.3  ADDITIONAL CONDITIONS TO THE OBLIGATIONS OF PARENT AND MERGER SUB. 
The obligations of Parent and Merger Sub to consummate the Merger and the 
transactions contemplated by this Agreement shall be subject to the 
satisfaction at or prior to the Closing of each of the following conditions, 
any of which may be waived, in writing, exclusively by Parent:

          (a)  REPRESENTATIONS AND WARRANTIES.  The representations and 
warranties of the Company contained in this Agreement shall be true and 
correct in all material respects on and as of the Closing Date, except for 
changes contemplated by this Agreement and except for those representations 
and warranties which address matters only as of a particular date (which 
shall remain true and correct as of such date), with the same force and 
effect as if made on and as of the Closing Date, except for those 
representations and warranties that are qualified by references to "material" 
or  "Material Adverse Effect" which all shall be true and correct in all 
respects, and except, in all such cases, for such breaches, inaccuracies or 
omissions of such representations and warranties which have neither had nor 
reasonably would be expected to have a Material Adverse Effect on the Company 
or Parent; and Parent and Merger Sub shall have received a certificate to 
such effect signed on behalf of the Company by the chief executive officer 
and chief financial officer of the Company.

          (b)  AGREEMENTS AND COVENANTS.  The Company shall have performed or 
complied in all material respects with all agreements and covenants required 
by this Agreement to be performed or complied with by it on or prior to the 
Effective Time, and Parent and Merger Sub shall have received a certificate 
to such effect signed by a duly authorized officer of the Company.  

          (c)  LEGAL OPINION.  Parent shall have received a legal opinion 
from Alston & Bird LLP, legal counsel to the Company, in form and substance 
reasonably acceptable to counsel of Parent.  


                                      55


<PAGE>

          (d)  MATERIAL ADVERSE CHANGE.  There shall not have occurred any 
material adverse change in the business, assets (including intangible assets) 
financial condition or results of operations of the Company since the date of 
the Company Current Balance Sheet.

          (e)  NO ELECTION TO TREAT AS LIQUIDATION.  Prior to the Closing 
Date, there shall have been no election made by the holders of a majority of 
the Company's Preferred Stock, in accordance with Section 3.2 of the 
Company's Articles of Incorporation, to treat the Merger as a liquidation, 
dissolution or winding up of the Company in accordance with such Articles of 
Incorporation.

          (f)  NO DISSENTERS.  Holders of more than five (5%) of the 
outstanding shares of Company Capital Stock shall not have exercised, nor 
shall they have any continued right to exercise, dissenters'  rights under 
applicable law with respect to their shares by virtue of the Merger.

          (g)  THIRD-PARTY CONSENTS.  Parent shall have been furnished with 
evidence satisfactory to it that the Company has obtained the consents, 
approvals and waivers set forth in Schedule 6.3(j).  

          (h)  DUE DILIGENCE INVESTIGATION.  Parent shall have completed its 
due diligence investigation of the Company to Parent's reasonable 
satisfaction, provided that no information or knowledge obtained in such 
investigation shall affect or be deemed to modify any representation or 
warranty of the Company contained herein.  In this regard, Parent's due 
diligence investigation shall be conclusively deemed to have been completed 
to Parent's reasonable satisfaction in the event that the preliminary Company 
Schedules attached hereto are not subsequently modified, or otherwise do not 
require subsequent modification, in order to make the Company's 
representations and warranties true and correct in all material respects on 
and as of the Closing Date.

          (i)  COMPANY 1997 FINANCIAL STATEMENTS.  The Company shall have 
completed and delivered to Parent a copy of its audited financial statements 
for the year ended December 31, 1997.


                                    ARTICLE VII

                    NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES

     7.1  NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES.  All of the 
representations and warranties of the Company, Parent and Merger Sub 
contained in this Agreement or in any instrument delivered pursuant to this 
Agreement (each as modified by the corresponding schedules thereto) shall 
terminate at the Effective Time.


                                    ARTICLE VIII


                                      56


<PAGE>

                          TERMINATION, AMENDMENT AND WAIVER

     8.1  TERMINATION.  Except as provided in Section 8.2 below, this 
Agreement may be terminated and the Merger abandoned at any time prior to the 
Effective Time:

          (a)  by mutual consent of the Company and Parent;

          (b)  by Parent or the Company if:  (i) the Effective Time has not 
occurred before 5:00 p.m. (Pacific time) on May 15, 1998 (provided that (A) 
the right to terminate this Agreement under this clause 8.1(b)(i) shall not 
be available to any party whose failure to use its commercially reasonable 
efforts to fulfill any obligation hereunder has been the cause of, or 
resulted in, the failure of the Effective Time to occur on or before such 
date, and (B) such date shall be automatically extended where the failure to 
Close is a result of not obtaining HSR Clearance and the parties are 
continuing to pursue such clearance); (ii) there shall be a final 
nonappealable order of a federal or state court in effect preventing 
consummation of the Merger; or (iii) there shall be any statute, rule, 
regulation or order enacted, promulgated or issued or deemed applicable to 
the Merger by any governmental entity that would make consummation of the 
Merger illegal; 

          (c)  by Parent if there shall be any action taken, or any statute, 
rule, regulation or order enacted, promulgated or issued or deemed applicable 
to the Merger, by any Governmental Entity, which would:  (i) prohibit 
Parent's or the Company's ownership or operation of all or any portion of the 
business of the Company or (ii) compel Parent or the Company to dispose of or 
hold separate all or a portion of the business or assets of the Company or 
Parent as a result of the Merger;

          (d)  by Parent if it is not in material breach of its obligations 
under this Agreement and there has been a breach of any representation, 
warranty, covenant or agreement contained in this Agreement on the part of 
the Company and (i) such breach has not been cured within thirty (30) days 
after written notice to the Company (provided that, no cure period shall be 
required for a breach which by its nature cannot be cured), and (ii) as a 
result of such breach the conditions set forth in Section 6.3(a) or 6.3(b), 
as the case may be, would not then be satisfied; or

          (e)  by the Company if it is not in material breach of its 
obligations under this Agreement and there has been a breach of any 
representation, warranty, covenant or agreement contained in this Agreement 
on the part of Parent or Merger Sub and (i) such breach has not been cured 
within thirty (30) days after written notice to Parent (provided that, no 
cure period shall be required for a breach which by its nature cannot be 
cured), and (ii) as a result of such breach the conditions set forth in 
Section 6.2(a) or 6.2(b), as the case may be, would not then be satisfied.

Where action is taken to terminate this Agreement pursuant to this Section 
8.1, it shall be sufficient for such action to be authorized by the Board of 
Directors (as applicable) of the party taking such action.


                                      57


<PAGE>

     8.2  EFFECT OF TERMINATION.  In the event of termination of this 
Agreement as provided in Section 8.1, this Agreement shall forthwith become 
void and there shall be no liability or obligation on the part of Parent, 
Merger Sub or the Company, or their respective officers, directors or 
shareholders, provided that each party shall remain liable for any breaches 
of this Agreement prior to its termination; and provided further that, the 
provisions of Sections 5.3 and 5.4 and Article VIII of this Agreement shall 
remain in full force and effect and survive any termination of this Agreement.

     8.3  AMENDMENT.  Except as is otherwise required by applicable law after 
the shareholders of the Company and the Stockholders of Parent approve this 
Agreement, this Agreement may be amended by the parties hereto at any time by 
execution of an instrument in writing signed on behalf of each of the parties 
hereto.

     8.4  EXTENSION; WAIVER.  At any time prior to the Effective Time, Parent 
and Merger Sub, on the one hand, and the Company, on the other, may, to the 
extent legally allowed, (i) extend the time for the performance of any of the 
obligations of the other party hereto, (ii) waive any inaccuracies in the 
representations and warranties made to such party contained herein or in any 
document delivered pursuant hereto, and (iii) waive compliance with any of 
the agreements or conditions for the benefit of such party contained herein.  
Any agreement on the part of a party hereto to any such extension or waiver 
shall be valid only if set forth in an instrument in writing signed on behalf 
of such party.


                                      ARTICLE IX

                                  GENERAL PROVISIONS

     9.1  NOTICES.  All notices and other communications hereunder shall be 
in writing and shall be deemed given if delivered personally or by commercial 
delivery service, or mailed by registered or certified mail (return receipt 
requested) or sent via facsimile (with acknowledgment of complete 
transmission) to the parties at the following addresses (or at such other 
address for a party as shall be specified by like notice):

          (i)  if to Parent or Merger Sub, to:

               Healtheon Corporation
               87 Encina
               Palo Alto, CA 94301
               Attention:  W. Michael Long
               Telephone No.:  (650) 614-0200
               Facsimile No.:  (650) 614-3300


                                      58


<PAGE>

               with a copy to:

               Wilson Sonsini Goodrich & Rosati, P.C.
               650 Page Mill Road
               Palo Alto, California 94304
               Attention:  Steven E. Bochner, Esq.
                           Jeffrey A. Herbst, Esq.
               Telephone No.:  (415) 493-9300
               Facsimile No.:  (415) 493-6811

          (ii) if to the Company, to:

               ActaMed Corporation
               7000 Central Parkway, Suite 600
               Atlanta, Georgia  30328
               Attention: Michael K. Hoover
               Telephone No.:  (770) 352-1600
               Facsimile No.:  (770) 352-1601

               with a copy to:

               Alston & Bird
               1201 W. Peachtree Street
               Atlanta, Georgia  30309
               Attention:  George M. Maxwell, Jr.
               Telephone No.:  (404) 881-7570
               Facsimile No.:  (404) 881-7777

     9.2  INTERPRETATION.  The words "include," "includes" and "including" 
when used herein shall be deemed in each case to be followed by the words 
"without limitation."  The table of contents and headings contained in this 
Agreement are for reference purposes only and shall not affect in any way the 
meaning or interpretation of this Agreement.

     9.3  COUNTERPARTS.  This Agreement may be executed in one or more 
counterparts, all of which shall be considered one and the same agreement and 
shall become effective when one or more counterparts have been signed by each 
of the parties and delivered to the other party, it being understood that all 
parties need not sign the same counterpart.

     9.4  ENTIRE AGREEMENT; ASSIGNMENT.  This Agreement, the Schedules and 
Exhibits hereto, and the documents and instruments and other agreements among 
the parties hereto referenced herein:  (a) constitute the entire agreement 
among the parties with respect to the subject matter hereof and supersede all 
prior agreements and understandings, both written and oral, among the parties 
with respect to the subject matter hereof; (b) are not intended to confer 
upon any other person any rights 


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or remedies hereunder (except with respect to Section 5.17); and (c) shall 
not be assigned by operation of law or otherwise except as otherwise 
specifically provided, except that Parent and Merger Sub may assign their 
respective rights and delegate their respective obligations hereunder to 
their respective Affiliates.

     9.5  SEVERABILITY.  In the event that any provision of this Agreement or 
the application thereof, becomes or is declared by a court of competent 
jurisdiction to be illegal, void or unenforceable, the remainder of this 
Agreement will continue in full force and effect and the application of such 
provision to other persons or circumstances will be interpreted so as 
reasonably to effect the intent of the parties hereto.  The parties further 
agree to replace such void or unenforceable provision of this Agreement with 
a valid and enforceable provision that will achieve, to the extent possible, 
the economic, business and other purposes of such void or unenforceable 
provision.

     9.6  OTHER REMEDIES.  Except as otherwise provided herein, any and all 
remedies herein expressly conferred upon a party will be deemed cumulative 
with and not exclusive of any other remedy conferred hereby, or by law or 
equity upon such party, and the exercise by a party of any one remedy will 
not preclude the exercise of any other remedy.

     9.7  GOVERNING LAW.  This Agreement shall be governed by and construed 
in accordance with the laws of the State of California, regardless of the 
laws that might otherwise govern under applicable principles of conflicts of 
laws thereof. 

     9.8  RULES OF CONSTRUCTION.  The parties hereto agree that they have 
been represented by counsel during the negotiation and execution of this 
Agreement and, therefore, waive the application of any law, regulation, 
holding or rule of construction providing that ambiguities in an agreement or 
other document will be construed against the party drafting such agreement or 
document.

     9.9  SPECIFIC PERFORMANCE.  The parties hereto agree that irreparable 
damage would occur in the event that any of the provisions of this Agreement 
were not performed in accordance with their specific terms or were otherwise 
breached.  It is accordingly agreed that the parties shall be entitled to an 
injunction or injunctions to prevent breaches of this Agreement and to 
enforce specifically the terms and provisions hereof in any court of the 
United States or any state having jurisdiction, this being in addition to any 
other remedy to which they are entitled at law or in equity.


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     IN WITNESS WHEREOF, Parent, Merger Sub, and the Company have caused this 
Agreement to be signed by their duly authorized respective officers and 
representatives, all as of the date first written above.


ACTAMED CORPORATION                HEALTHEON CORPORATION



By /s/ Michael Hoover              By /s/ W. Michael Long
   ---------------------------     -----------------------------
   Name: Michael Hoover            Name: W. Michael Long
   Title: President and Chief      Title: President and Chief
          Executive Officer               Executive Officer


                                   MEDNET ACQUISITION CORP.



                                   By /s/ W. Michael Long
                                      -----------------------------
                                      Name: W. Michael Long
                                      Title: President



                                           
                            ***REORGANIZATION AGREEMENT**