AMENDMENT TO EMPLOYMENT AGREEMENT

         Amendment No. 1 dated as of December 21, 1999 to the Employment
Agreement (the "Employment Agreement") dated as of May 16, 1999 between Medical
Manager Corporation (formerly Synetic, Inc., the "Company"), a Delaware
corporation, and John H. Kang ("Executive").

         WHEREAS, concurrently with the execution of this Amendment, the Company
has made a loan (the "Loan") in favor of Executive;

         WHEREAS, as an inducement for the Company to make the Loan to
Executive, the parties desire to amend the Employment Agreement upon the terms
and conditions set forth herein; and

         NOW, THEREFORE, for valuable consideration, the sufficiency of which is
hereby acknowledged, the parties agree as follows:

1.       Amendments.

(a)               Bonus. Section 2.6 is hereby amended in its entirety to read
                  as follows:

                  Executive may receive a bonus or bonuses during the Employment
                  Period at such times and in such amounts as the Compensation
                  Committee of the Board may determine in its sole discretion.

(b)               Option Grant. Section 4(b) is hereby amended by deleting "six
                  month" each time it appears in such subparagraph and by
                  substituting therefor "one-year".

(c)               Termination by the Company without Cause.  Section 5.3(iii)
                   is hereby amended in its entirety to read as follows:

                  $600,000 of the principal amount payable under the Note (the
                  "Note") dated December 21, 1999 made by Executive in favor of
                  the Company in the principal amount of $2.4 million shall be
                  forgiven by the Company

(d)               Liquidated Damages. The reference to "Section 5.3 or Section
                  5.5" contained in the second line of Section 5.4 shall be
                  amended to read as follows: "Section 5.3, Section 5.5 or
                  Section 5.6".

(e)               Termination by Executive for Good Reason. (i) Section 5.5(a)
                  of the Employment Agreement is hereby amended by deleting the
                  word "bonus" in the fourth line thereof and substituting
                  therefor "the loan forgiveness in the amount of $600,000".


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                  (ii) Section 5.5(b)(6) is hereby amended by deleting "six
                  months" and substituting therefor "one-year".

(f)               Special Payment. Section 5.6 is hereby amended in its entirety
                  to read as follows:

                  Special Payment. In the event of the occurrence of a Change in
                  Control that is not approved by a majority of the Incumbent
                  Directors on or prior to December 21, 2003, Executive shall be
                  entitled to receive an amount in cash equal to $2.4 million
                  less the amount of any discretionary bonus previously paid to
                  him pursuant to Section 2.6 of this Agreement (the "Special
                  Payment") on the date of the consummation of the Change in
                  Control. If a Change in Control occurs that is approved by a
                  majority of the Incumbent Directors on or prior to December
                  21, 2003, Executive shall be entitled to receive the Special
                  Payment (i) on the one-year anniversary of the date of the
                  Change in Control (or such earlier date as may be agreed to by
                  the successor), so long as he remains employed through such
                  date, or (ii) upon a termination of Executive's employment by
                  the Company without Cause or by Executive with Good Reason
                  during such one-year period.

         2. Employment Agreement in Effect. Except as set forth herein, the
Employment Agreement remains in full force and effect.

         3. Governing Law. This Amendment shall be construed in accordance with
and governed for all purposes by the laws of the State of Florida.

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.


                                             MEDICAL MANAGER CORPORATION




                                             By: ______________________________
                                                 Name:
                                                 Title:



                                             EXECUTIVE



                                             __________________________________
                                             John H. Kang