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                                                                     EXHIBIT 4.6

                                 CONFIDENTIAL


February 4, 2000

[Director]
American TeleSource International, Inc.

Re:  GlobalSCAPE, Inc. 1998 Stock Option Plan (the "Stock Option Plan")

Dear [Director]:

     On January 1, 1998 you and GlobalSCAPE, Inc. ("GlobalSCAPE") signed a
letter under which GlobalSCAPE granted you an option to purchase 16,190 shares
of GlobalSCAPE common stock for $0.10 (ten cents) per share with the option
vesting on January 1, 1999; on April 30, 1999 you and GlobalSCAPE signed a
letter under which GlobalSCAPE granted you an option to purchase 1000 shares of
GlobalSCAPE common stock for $0.10 (ten cents) per share with the Option vesting
on January 1, 1999; and on July 1, 1999, you and GlobalSCAPE signed a letter
under which GlobalSCAPE granted you an option to purchase 1000 shares of
GlobalSCAPE common stock for $0.10 (ten cents) per share with the option vesting
on May 13, 1999 (the January 1, 1998 grant, April 30, 1999 grant and July 1,
1999 grant referred to collectively as the "Option").

     Section 9 of the letter and Section 5 of the Plan contain provisions
requiring adjustment of your Option under circumstances described in those
provisions. As you know, the Boards of Directors of GlobalSCAPE and ATSI have
approved a financing plan as described in more detail on the attached Exhibit A
(the "Financing Plan"). To create the number of common shares needed to
establish a viable public market as contemplated by this plan, GlobalSCAPE will
either have to issue substantially more shares than the 1.7 million currently
outstanding, or will have to declare a stock split. The issuance of additional
shares or a stock split, taken by itself, might give rise to a requirement that
the number of shares subject to your Option be adjusted. However, any new
issuance or stock split that occurs would be part of the Financing Plan
described on Exhibit A which, as a whole, is not the type of event that should
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give rise to an adjustment under the letter and the Plan.

     As a member of the management team of GlobalSCAPE, you have participated in
discussions regarding the means of financing GlobalSCAPE's growth, both in
general and with respect to the Financing Plan, specifically. You have also
participated in discussions regarding the best means of balancing ATSI's
interest as sole shareholder of GlobalSCAPE against the interest of option
holders under the Stock Option Plan. Although there have been differences of
opinion between the parties to these discussions, a consensus has been reached
that the best course of action currently available is to proceed with the
Financing Plan.
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     We ask you to acknowledge that you agree that it is in the best interest of
GlobalSCAPE, and therefore your best interest as an option holder, to proceed
with the Financing Plan. We also ask you to facilitate the Financing Plan by
agreeing that you will not claim any right of adjustment in the number of common
shares underlying your Option under the terms of the letter and the Plan as a
result of the consummation of the Financing Plan.

     Please sign this letter where indicated below and return it to me to
acknowledge your agreement on these issues. This letter constitutes the final
and complete agreement of the parties with respect to its subject matter, and
supercedes any prior agreements, discussions or understandings, written or oral.

                              Sincerely,



                              H. Douglas Saathoff
                              Secretary


Agreed:

_______________________
[Director]

Date:_________