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Exhibit 10.99a




December 19, 2002


Victor T. Weber
9416 Gold Mountain Drive
Las Vegas, Nevada  89134

RE: EXECUTIVE AGREEMENT/GIS

Dear Victor,

         On behalf of Government  Internet Systems,  Inc., a Nevada  corporation
(the  "Company"),  I am pleased to confirm  your  appointment  as  President  of
Government  Internet  Systems,   Inc.,  a  Nevada  corporation  (the  "Company")
effective as of November 11, 2002 and your acceptance of such  appointment.  The
Company  looks  forward to your future  success as an  executive of the Company.
Pursuant to this letter agreement, you and we hereby confirm the following:

1. You will serve as  President  of the Company for six (6) months from the date
hereof.

2. In the event Company actually receives (a) a minimum of $2,500,000 of funding
or (b) sales in excess of  $1,000,000  in the next six (6) months  from the date
hereof,  then the  Employment  Agreement,  attached  hereto as  Attachment A and
incorporated  by this reference will become  affective on the date either (a) or
(b) occurs (the  "Effective  Date").  In the event that  neither (a) nor (b) has
occurred  within six (6) months after the  execution  of this letter  agreement,
then either party may terminate  this  Agreement upon thirty (30) days notice to
the other party.

3. During the term of this letter agreement, you expressly acknowledge and agree
that the terms of this  letter  agreement  shall  control  until the  Employment
Agreement becomes effective.  In addition,  unless and until all of the terms of
the Employment Agreement become effective,  the Company shall have no obligation
to pay the salary and benefits  specified in Paragraphs  3.1, 3.6, and 3.7, 4.1,
4.2, 4.3, and 4.4.

4.  During  the term of the  letter  agreement,  the  parties  agree  that  only
Paragraphs  1,  3.3,  3.4,  3.5,  3.8,  4.5,  5, 6, 7, 8, 9,  10,  and 11 of the
Employment  Agreement  be  incorporated  as terms of this letter  agreement.  In
accordance   with   Paragraphs  3.3  and  3.5  of  the   Employment   Agreement,
respectively,  the Company expressly acknowledges and confirms you shall receive
the  following:  (a) five  hundred  (500)  shares  of the  twenty-five  thousand
(25,000)  authorized common stock shares of the Company (the "Shares"),  subject
to the terms of the Buyback Agreement (attached as Attachment B and incorporated
herein by this reference), dated December 19, 2002, between Vertical and you (in
accordance  with  Paragraph 3.3 of the Employment  Agreement);  and (b) five (5)
year warrants  (attached as Attachment  C) to purchase  1,000,000  shares of the
common  stock of Vertical  Computer  Systems,  Inc. at a strike  price of $0.01,
vesting  in  100,000  increments  each  month  until  all  warrants  are  vested
(beginning December 19, 2002), and subject to Vertical's one (1) year lock- up



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agreement.  The Company  shall  reimburse  you for  reasonable  travel and other
expenses  incurred  in the course of  performing  services  hereunder.  You will
receive no other  compensation  for your services as an executive of the Company
until either of the events specified in Paragraph 2, Section (a) or (b) occurs.

5. You agree that you will  execute,  and deliver to an officer of the  Company,
the  Company's  Confidentiality  and  Development  Agreement,  which is attached
hereto as Attachment C and incorporated  herein by this reference.  In addition,
you will abide by the Company's  strict policy that  prohibits any new employee,
consultant  or advisor from using or bringing  with him or her from any previous
employer any confidential information, trade secret, or proprietary materials or
processes of such employer.

         Again, let me indicate how pleased we all are to extend this offer, and
how much we look forward to working together. Please indicate your acceptance by
signing and returning the enclosed copy of this letter agreement and the affixed
attachments.  Only a written  agreement signed by the Company and you can modify
or amend this letter agreement.


Very truly yours,


GOVERNMENT INTERNET SYSTEMS, INC.

By: ________________________________
         Steve Rossetti, Director


ACCEPTED AND AGREED:


VERTICAL COMPUTER SYSTEMS, INC.

By: _______________________________
         Richard Wade, President/CEO
         Vertical Computer Systems, Inc.,
         majority controlling shareholder of
         Government Internet Systems, Inc.


VICTOR T. WEBER

By: _______________________________
         Victor T. Weber, an individual





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                                  ATTACHMENT A

                              EMPLOYMENT AGREEMENT




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                                  ATTACHMENT B

                               BUY BACK AGREEMENT




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                                  ATTACHMENT C

                                     WARRANT




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                                  ATTACHMENT D

                    CONFIDENTIALITY AND DEVELOPMENT AGREEMENT