Document:

MUTUAL SEPARATION AGREEMENT

      This Mutual Separation Agreement is made as of September 30, 2004, between
GVI Security, Inc., a Delaware corporation (the "Company"), GVI Security
Solutions, Inc., a Delaware corporation (the "Parent") and Thomas Wade ("Wade").

                                    RECITALS

      WHEREAS, Wade and the Company are parties to an Employment Agreement,
dated as of July 22, 2003 (the "Employment Agreement;" capitalized terms used
but not defined herein shall have the meanings set forth in the Employment
Agreement), whereby Wade was employed as President of the Company; and

      WHEREAS, Wade and the Company have agreed to a mutual separation of the
employment relationship, termination of the Employment Agreement, and the
settlement and release of claims by each party on the terms set forth herein.

      NOW, THEREFORE, THE PARTIES AGREE AS FOLLOWS:

      1. Termination. Wade's employment with Company is terminated as of the
date hereof (the "Termination Date") in accordance with Section 2.2(f) of the
Employment Agreement.

      2. Severance. In accordance with Section 2.3 of the Employment Agreement,
Wade will be paid (i) on the date hereof, an amount equal to his accrued and
unpaid salary through the date hereof, plus any accrued vacation pay, any
unreimbursed expenses and any Incentive Bonus then earned but not already paid,
(ii) $350,000 payable in twenty-four (24) equal installments over the 12-month
period ending one-year from the date hereof; and (iii) within 60 days after the
end of the first Bonus Period ending after the date hereof, a prorated portion
(based upon the number of days during such Bonus Period Wade was employed by the
Company) of the Incentive Bonus that would otherwise be payable to Wade with
respect to such Bonus Period. In addition, until the end of the 12-month period
ending one-year period from the date hereof, Wade shall continue to be (i)
entitled to a monthly non-accountable expense allowance of $1,200, (ii) entitled
to a monthly automobile allowance of $800, and (iii) provided with medical
benefits under the Company's medical insurance plans on the same basis
applicable to other employees of the Company.

      3. Acceleration of Vesting of Stock Option. Immediately upon the execution
of this Agreement by the parties hereto, Wade's option to purchase 1,975,020
shares of Parent's common stock, par value $.001 per share, under the Option
Agreement, dated as of February 20, 2004, between Wade and Parent (f/k/a
Thinking Tools, Inc.) shall be exercisable in full.

      4. Release.

            (a) In exchange for the consideration provided for by Sections 2 and
3 hereof, Wade for himself and for his heirs, executors, administrators and
assigns (hereinafter referred to collectively as "Releasors"), forever releases
and discharges the Company, the Parent and any of their now or hereafter
existing subsidiaries, parent companies, divisions, affiliates or related
business entities, successors and assigns and any of their past or present
shareholders, directors, officers, attorneys, agents, trustees, administrators,
employees or assigns (whether acting as agents for the Company or in their
individual capacities) (hereinafter referred to collectively as "Releasees"),
from any and all claims, demands, causes of action, fees and liabilities of any
kind whatsoever, whether known or unknown, which Releasors ever had, now have or
may have against Releasees by reason of any actual or alleged act, omission,
transaction, practice, conduct, occurrence or other matter up to and including
the date hereof.

<PAGE>

            (b) Without limiting the generality of the foregoing, this Agreement
is intended to and shall release Releasees from any and all claims, whether
known or unknown, which Releasors ever had, now have and may have against
Releasees, including but not limited to any claims, whether or not asserted,
arising out of Wade's employment with Releasees and/or his termination from such
employment, including but not limited to: (i) any claim under the Civil Rights
Act of 1964, as amended; (ii) any other claim of discrimination or retaliation
in employment (whether based on federal, state or local law, statutory or
decisional); (iii) any claim arising out of the terms and conditions of Wade's
employment with the Company, his termination from such employment, and/or any of
the events relating directly or indirectly to or surrounding such termination;
(iv) any claim of discrimination or breach of fiduciary duty under the Employee
Retirement Income Security Act of 1974, as amended (except claims for accrued
vested benefits under any employee benefit plan of the Company in accordance
with the terms of such plan and applicable law); (v) any claim arising under the
Federal Age Discrimination in Employment Act of 1997, as amended, and the
applicable rules and regulations thereunder; and (vi) any claim for attorney's
fees, costs, disbursements and/or the like.

      5. Covenant not to Sue. Wade covenants, except to the extent prohibited by
law, not to commence, maintain, prosecute or participate in any action, charge,
complaint or proceeding of any kind (on his own behalf and/or on behalf of any
other person or entity and/or on behalf of or as a member of any alleged class
of persons) in any court, or before any administrative or investigative body or
agency (whether public, quasi-public or private), except if otherwise required
by law, against Releasees with respect to any act, omission, transaction or
occurrence up to and including the date on which this Agreement is executed.

      6. Cooperation. Wade agrees to cooperate with the Company, the Parent and
their counsel in any action, proceeding or litigation relating to any matter in
which Wade was involved or of which Wade has knowledge as a result of or in
connection with his employment by the Company.

      7. Non-Disparagement. Wade agrees that he will not at any time, orally or
in writing, willfully denigrate, disparage, ridicule or criticize, or willfully
make any derogatory, disparaging or damaging statements (or induce or encourage
others to engage in any such act) regarding the Company, the Parent, and any
their subsidiaries, divisions, affiliates or related business entities,
successors and assigns and any of their or past or present shareholders,
directors, officers, attorneys, agents, trustees, administrators, employees or
any other representatives of the Company or any of their respective products or
properties, including by way of news interviews or the expression of personal
views, opinions or judgments to the media.

                                       2
<PAGE>

      8. Confidentiality; Return of Corporate Property, Non-Solicitation.
Following the date hereof, Wade shall continue to be bound by the provisions of
Sections 5, 6 and 8 of the Employment Agreement in accordance with the terms
thereof.

      9. Specific Performance. In view of the irreparable harm and damage which
would be incurred by the Company and the Parent in the event of any violation by
Wade of any of the provisions of Sections 4 through 8 hereof, Wade hereby
consents and agrees that in any such event, the Company and the Parent, in
addition to any other rights they may have, and without prejudice to any other
remedies which may be available at law or in equity, shall be entitled to an
injunction or similar equitable relief to be issued by any court of competent
jurisdiction restraining Wade from committing or continuing any such violation,
without the necessity of proving damage, or posting any bond or other security.

      10. Acknowledgment. Wade acknowledges that: (i) he has carefully read this
Agreement in its entirety; (ii) he has had an opportunity to consider fully the
terms of this Agreement; (iii) he fully understands the significance of all the
terms and conditions of this Agreement; (iv) he has had answered to his
satisfaction any questions he has asked with regard to the meaning and
significance of any of the provisions of this Agreement; and (v) he is signing
this Agreement voluntarily and of his own free will and assents to all the terms
and conditions contained herein.

      11. Governing Law. This Agreement shall be governed in all respects by the
laws of the State of Texas without reference to its choice of law rules.

      12. Successors and Assigns. Except as otherwise provided herein, the
provisions hereof shall inure to the benefit of, and be binding upon, the
successors, assigns, heirs, executors and administrators of the parties hereto.

      13. Entire Agreement; Amendment. This Agreement constitutes the full and
entire understanding and agreement between the parties with regard to the
subjects hereof and thereof. Neither this Agreement nor any term hereof may be
amended, waived, discharged or terminated other than by a written instrument
signed by the party to be charged.

      14. Counterparts. This Agreement may be executed in any number of
counterparts, each of which shall be enforceable against the parties actually
executing such counterparts, and all of which together shall constitute one
instrument.

      15. Severability. The holding of any provision of this Agreement to be
invalid or unenforceable by a court of competent jurisdiction shall not affect
any other provision of this Agreement, which shall remain in full force and
effect.

                                       3
<PAGE>

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

                                       GVI SECURITY, INC.

                                       By: __________________________
                                           Name:
                                           Title:

                                       GVI SECURITY SOLUTIONS, INC.

                                       By: __________________________
                                           Name:
                                           Title:

                                       ------------------------------
                                               Thomas Wade

                                       4Exhibit 10.1

                             MODIFICATION AGREEMENT

      THIS MODIFICATION AGREEMENT (the "Agreement") is made and entered into as
of September 2, 2004, between Aladdin Systems Holdings, Inc., a Nevada
corporation ("ALHI") and International Microcomputer Software, Inc., a
California corporation ("IMSI").

                                    RECITALS

      WHEREAS, on January 20, 2004 ALHI and IMSI entered into a Stock Purchase
Agreement pursuant to which IMSI purchased from ALHI 100% of the outstanding
shares of capital stock of Aladdin Systems, Inc., a Delaware corporation
("Aladdin Systems");

      WHEREAS, on April 18, 2004, ALHI and IMSI consummated the acquisition of
Aladdin Systems (the "Closing");

      WHEREAS, pursuant to the Stock Purchase Agreement, at the Closing, ALHI
and IMSI executed a Registration Rights Agreement;

      WHEREAS, pursuant to the Stock Purchase Agreement, a portion of the
consideration to be paid by IMSI to ALHI is to be based upon the revenues of
Aladdin Systems for the three (3) year period following the Closing (the "Earn
Out");

      WHEREAS, pursuant to the Registration Rights Agreement, IMSI was to have
filed, on or before July 18, 2004, a Form SB-2 registration statement with the
Securities and Exchange Commission ("SEC") to register shares of IMSI common
stock issued to ALHI at the Closing as part of the consideration under the Stock
Purchase Agreement

      WHEREAS, ALHI and IMSI desire to modify certain provisions of the Stock
Purchase Agreement as they relate to the amount of the Earn Out and the payment
of the Earn Out and desire to modify certain provisions of the Registration
Rights Agreement as they relate to filing of the Registration Statement;

      NOW, THEREFORE, in consideration of the premises, the mutual covenants and
agreements contained herein and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

      Section 1.1 Determination of the Earn Out.

      Notwithstanding anything to the contrary contained in the Stock Purchase
Agreement, ALHI and IMSI agree that the total amount of the Earn Out Payments,
as defined in Section 2.3 of the Stock Purchase Agreement, to be payable to ALHI
under the Stock Purchase Agreement shall be $1,700,000.00, payable in cash and
stock as described hereinafter (the "Earn Out Sum Certain"). Except for the Earn
Out Sum Certain, ALHI agrees to waive all other right to receive payment of the
Earn Out Payments.
<PAGE>

      The Earn Out Sum Certain shall be payable to ALHI by IMSI as set forth in
Section 1.2 below.

      Section 1.2 Payment of the Earn Out Sum Certain.

      Notwithstanding anything to the contrary contained in the Stock Purchase
Agreement, ALHI and IMSI agree that the Earn Out Sum Certain shall be payable by
IMSI to ALHI as follows:

      (a) The amount of six hundred sixty-six thousand six hundred sixty-seven
($666,667) Dollars payable in immediately available funds on or before June 2,
2005.

      (b) The amount of One million thrity-three thousand eight hundred and
thirty three ($1,033,833) dollars in newly issued restricted shares of IMSI
common stock, no par value, valued at the closing bid price on the day of
signing.

      Section 1.3 Filing of the Registration Statement.

      Notwithstanding anything to the contrary contained in the Stock Purchase
Agreement or the Registration Rights Agreement, ALHI agrees that IMSI shall not
be required to file the Registration Statement until September 30, 2004. IMSI
acknowledges that IMSI shall use it best efforts to prepare the Registration
Statement in accordance with the SEC's regulations thereof and IMSI acknowledges
that the Registration Statement, when filed, shall contain therein, IMSI's
audited financial statements for its fiscal year ended June 30, 2004.

      Notwithstanding anything to the contrary contained herein, IMSI agrees and
acknowledges that in the event that the Registration Statement has not been
declared effective by the SEC on or before December 31, 2004, the liquidated
damages provided for in Section 10 of the Registration Rights Agreement shall
apply and the liquidated damages provided therein shall be payable by IMSI to
Aladdin commencing as of December 31, 2004.

      Section 1.4 No Other Changes.

      Except as set forth herein, there are no other modifications, amendments
or changes to the Stock Purchase Agreement and the Registration Rights Agreement
and the Stock Purchase Agreement and the Registration Rights Agreement shall be
in full force and effect, as amended herein.
<PAGE>

      Section 1.5 Entire Agreement.

      This Agreement constitutes the entire agreement among the parties hereto
with respect to the subject matter hereof, supersedes and is in full
substitution for any and all prior agreements and understandings among them
relating to such subject matter.

      Section 1.6 Descriptive Headings.

      The descriptive headings of the several sections of this Agreement are
inserted for convenience only and shall not control or affect the meaning or
construction of any of the provisions hereof.

      Section 1.7 Counterparts.

      For the convenience of the parties, any number of counterparts of this
Agreement may be executed by any one or more parties hereto, and each such
executed counterpart shall be, and shall be deemed to be, an original, but all
of which shall constitute, and shall be deemed to constitute, in the aggregate
but one and the same instrument.

      Section 1.8 Severability.

      In the event that any one or more of the provisions contained in this
Agreement or in any other instrument referred to herein, shall, for any reason,
be held to be invalid, illegal or unenforceable in any respect, then to the
maximum extent permitted by law, such invalidity, illegality or unenforceability
shall not affect any other provision of this Agreement or any other such
instrument. Furthermore, in lieu of any such invalid or unenforceable term or
provision, the parties hereto intend that there shall be added as a part of this
Agreement a provision as similar in terms to such invalid or unenforceable
provision as may be possible and be valid and enforceable.
<PAGE>

      IN WITNESS WHEREOF, ALHI and IMSI have executed and delivered this
Agreement as of the day and year first written above.

                                     ALADDIN SYSTEMS HOLDINGS, INC.

                                     By:    /s/ Jonathan Kahn
                                     Name:  Jonathan Kahn
                                     Title: President

                                     INTERNATIONAL MICROCOMPUTER SOFTWARE, INC.

                                     By:    /s/ Gordon Landies
                                     Name:  Gordon Landies
                                     Title: President

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