Document:

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                                                                   Exhibit 10.50

                                    SUBLEASE

         THIS SUBLEASE ("Sublease") is made and entered into as of the 4th day
of October, 2002 (the "Commencement Date"), by and between Action Performance
Companies, Inc., an Arizona corporation ("Lessor"), and Integrated Information
Systems, Inc., a Delaware corporation ("Lessee"). This Sublease supersedes the
sublease between Lessor and Lessee dated March 28, 2000 (the "Original
Sublease").

         1. BASIC LEASE PROVISIONS.

            a.    Building Property Address: 1480 South Hohokam Drive, Tempe,
                  Arizona 85281.

            b.    Lessee's Address (for notices): 1480 South Hohokam Drive,
                  Tempe, Arizona 85281, Attn: Chief Financial Officer.

            c.    Lessor's Address (for notices): 4707 East Baseline Road,
                  Phoenix, Arizona 85042, Attn: Chief Financial Officer.

            d.    Prime Lessor: H-B TEMPE, L.L.C.

            e.    Prime Lessor's Address (for notices): 4636 East University
                  Drive. Suite 265, Phoenix, Arizona 85034, Attn: Property
                  Manager.

            f.    Identification of Prime Lease and all Amendments thereto:
                  Lease dated June 28, 1999 by and between H-B TEMPE, L.L.C., an
                  Arizona limited liability company, as Lessor, and ACTION
                  PERFORMANCE COMPANIES, INC., an Arizona corporation, as
                  Lessee.

            g.    Commencement Date: The date hereof.

            h.    Expiration Date: 11:59 p.m. on February 28, 2003, unless
                  earlier terminated under the terms hereof.

            i.    Rent: $40,184.98.

            j.    Payee of Rent: Lessor.

            k.    Address for Payment of Rent: 4707 East Baseline Road, Phoenix,
                  Arizona 85042.

            l.    Description of Premises: Portions of the second floor of the
                  building (the "Building") consisting of approximately 36,285
                  of the approximate 65,018 rentable square feet of the
                  Building, all as depicted on the Floor Plan attached to this
                  Sublease as EXHIBIT A.

            m.    Lessee's Use: General office use and for any other purpose
                  permitted under the Prime Lease.

            n.    Security Deposit: $43,844.00.

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         2. PRIME LEASE. Lessor is the Lessee under a Prime Lease (the "Lease")
with the Prime Lessor. Lessor represents and warrants that (a) in connection
with the Original Sublease, Lessor delivered to Lessee a full and complete copy
of the Prime Lease and all other agreements between Prime Lessor and Lessor
relating to the leasing, use, and occupancy of the Premises, (b) the Prime Lease
is, as of the date hereof, in full force and effect, and (c) as of the date
hereof, there exist no material defaults under the Prime Lease. Lessor and
Lessee acknowledge and agree that the consent of the Prime Lessor to this
Sublease is required under the terms of Paragraph 16 of the Prime Lease.

         3. SUBLEASE.

            a. Lessor hereby subleases to Lessee, and the Lessee accepts from
the Lessor, the Premises.

            b. Lessee acknowledges and agrees that the Premises include certain
common areas within the Building including, without limitation, lobbies,
hallways, elevators, stairs and restroom facilities, and Lessee grants to Lessor
the nonexclusive right to use, in common with Lessee, such common areas.

            c. Lessor and Lessee acknowledge and agree that the Premises
constitute less than the entire premises leased by Lessor from the Prime Lessor
pursuant to the Prime Lease (the "Prime Leased Premises").

         4. TERM. The term of this Sublease (the "Term") shall commence on the
Commencement Date and shall continue on a month-to-month basis thereafter until
terminated by either party; provided, however, that notwithstanding the
month-to-month tenancy the first date upon which a termination notice may be
given is January 1, 2003, that no notice shall attempt to terminate the tenancy
on less than thirty days prior notice, and that the Term, even if no termination
notice is ever given, shall terminate not later than February 28, 2003
[consistent with page 1 Expiration Date].

         5. POSSESSION. Lessor shall provide the Premises to Lessee and Lessee
accepts the Premises in their current "as is" condition, Lessee acknowledging
that Lessor makes no representations or warranties concerning the condition of
the Premises including, without limitation, those relating to the structure of
the Premises, systems and components thereof and/or the presence of patent or
latent defects and that Lessor has no obligation to construct, remodel, improve,
repair, decorate or paint the Premises or any improvement thereon or a part
thereof.

         6. LESSEE'S USE. The Premises shall be used and occupied only for the
Lessee's Use set forth in Section 1(m). Lessee shall not use or occupy the
Premises nor permit anything to be done in or on the Premises which will
constitute a public or private nuisance and Lessee shall not use or occupy or
permit the Premises to be used or occupied in any manner which will violate any
laws or any of the terms, covenants and provisions of the Prime Lease, including
the rules and regulations attached to the Prime Lease, if any.

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         7. RENT.

            a. Rent shall be paid in equal monthly installments in advance on
the first day of each month of the Term. Rent shall be pro-rated for any partial
months during the Term. Except as may be otherwise provided herein, Lessee's
covenant to pay Rent shall be independent of every other covenant in this
Sublease.

            b. If Rent is not paid when due, which failure is not cured within
three (3) days after written notice thereof by Lessor to Lessee, such delinquent
Rent shall thereafter bear interest at the rate of twelve percent (12%) per
annum. In addition, if any installment of Rent is not paid when due, which
failure continues for ten (10) days, a late charge equal to five percent (5%) of
such overdue amount or Two Hundred Fifty and No/100 Dollars ($250.00), whichever
is greater, shall be due and payable. Lessee acknowledges that such late charge
represents a fair and reasonable estimate of the administrative costs Lessor
will incur by reason of late payments by Lessee. The provisions of this Section
providing for the assessment of interest and/or a late charge shall not be
deemed to authorize or grant to Lessee an option for the late payment of Rent
and shall not prevent Lessor from exercising the rights and remedies available
to Lessor in the event of delinquent payments.

         8. ADDITIONAL RENT. Lessor and Lessee acknowledge that Lessor is
obligated to pay additional rent under the Prime Lease for taxes, operating
expenses, insurance, common area maintenance charges and other expenses incurred
in connection with the Property (hereinafter "Additional Rent"). Lessor and
Lessee agree that the Rent does not include any Additional Rent under the Prime
Lease attributable to the Premises during the Term and Lessee shall be
responsible for their pro rata share of the Additional Rent for the Premises.

         9. LESSEE'S OBLIGATIONS. Lessee shall be responsible for, and shall pay
prior to delinquency the following:

            a. To the extent not provided by Prime Lessor, all utility
consumption costs, including without limitation, telephone, trash removal, cable
television and other charges incurred in connection with the Premises.

            b. All maintenance, repairs and replacements as to the Premises and
Lessee's fixtures and equipment therein, to the extent Lessor is obligated to
perform the same under the Prime Lease.

         10. QUIET ENJOYMENT. Lessor represents and warrants that it has full
power and authority to enter into this Sublease, subject to the consent of the
Prime Lessor as described in Section 2 above. So long as Lessee is not in
default in the performance of its covenants and agreements in this Sublease,
Lessee's quiet and peaceable enjoyment of the Premises shall not be disturbed or
interfered with by Lessor or by any person claiming by, through, or under
Lessor, subject, however, to the provisions of this

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Sublease. In addition, Lessee acknowledges that Lessor is not obligated to
furnish to Lessee any services under this Sublease and that any services to be
furnished to the Premises, shall be furnished by the Prime Lessor subject to and
in accordance with the provisions of the Prime Lease. As such, Lessor shall have
no liability to Lessee and Lessee hereby releases Lessor for, from and against
any claims, demands, judgments, losses, liabilities, costs and expenses
(including reasonable attorneys' fees) incurred or sustained by Lessee as a
result of the failure by the Prime Lessor to furnish to the Premises the
services described in the Prime Lease. In this regard, Lessor hereby assigns to
Lessee all of its rights against the Prime Lessor under the Prime Lease with
respect to the provision of services to the Premises and agrees that, if such
assignment is not effective, Lessor will, at Lessee's sole cost and expense, use
reasonable efforts to obtain from Prime Lessor such services to the Premises.

         11. LESSEE'S INSURANCE. Lessee shall procure and maintain, at its own
cost and expense, such insurance as is required to be carried by Lessor under
the Prime Lease, naming Lessor, as well as Prime Lessor, as additional insureds.
If the Prime Lease requires Lessor to insure leasehold improvements or
alterations, then Lessee shall insure such leasehold improvements which are
located in the Premises, as well as alterations in the Premises, made by Lessee.
Lessee shall furnish to Lessor a certificate of Lessee's insurance required
hereunder not later than the Commencement Date. No such policy shall be
cancelable or subject to reduction of coverage or other modification without the
prior written consent of Lessor. Lessee shall within thirty (30) days of the
expiration of any such policies, furnish to Lessor renewals or "binders"
thereof. If Lessee shall fail to procure and maintain any insurance required to
be maintained by it pursuant to the terms of the Prime Lease, Lessor may, but
shall not be required to, procure the same at Lessee's expense.

         12. ASSIGNMENT OR SUBLETTING. Lessee shall not assign, convey or
mortgage this Sublease or any interest under it.

         13. RULES. Lessee agrees to comply with all rules and regulations that
Prime Lessor has made or may hereafter from time to time make for the Building.
Lessor shall not be liable in any way for damage caused by the non-observance by
any other sublessee of similar covenants or of such rules and regulations.

         14. REPAIRS AND COMPLIANCE. Lessee shall promptly pay for the repairs
set forth in Section 9(B) and Lessee shall, at Lessee's own expenses, comply
with all laws and ordinances, and all orders, rules and regulations of all
governmental authorities and of all insurance bodies and their fire prevention
engineers at any time in force, applicable to the Premises. Lessor and Lessee
acknowledge and agree that Lessor shall not be obligated to make any
maintenance, repairs or replacements to the Premises, and Lessee shall look
solely to the Prime Lessor for the maintenance, repair and replacements that may
be necessary to the Premises. For this purpose, Lessor hereby assigns to Lessee
all of its rights against the Prime Lessor under the Prime Lease with respect to
maintenance, repair and replacement of the Premises, and agrees that if such
assignment is not effective, Lessor will, at Lessee's sole cost and expense, use
reasonable efforts to obtain

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from Prime Lessor performance of such maintenance, repair and/or replacement
obligations.

         15. FIRE OR CASUALTY OR EMINENT DOMAIN. In the event of a fire or other
casualty affecting the Building or the Premises, or of a taking of all or a part
of the Building or Premises, under the power of eminent domain, Lessor shall not
exercise any right which may have the effect of terminating the Prime Lease
without first obtaining the prior written consent of Lessee. In the event Lessor
is entitled, under the Prime Lease, to rent abatement as a result of a fire or
other casualty or as a result of a taking under the power of eminent domain,
then Lessee shall be similarly entitled to rent abatement. If the Prime Lease
imposes on Lessor the obligation to repair or restore leasehold improvements or
alterations, Lessee shall be responsible for repair or restoration of leasehold
improvements or alterations to the Premises and Lessee shall apply any insurance
proceeds resulting from the loss to repair and restore such leasehold
improvements and alterations. Lessor and Lessee acknowledge and agree that
Lessor shall not be obligated to perform any repair or restoration to the
Premises, following the occurrence of a casualty event or the exercise of the
power of eminent domain. For such matters, Lessee shall look solely to the Prime
Lessor and Lessor hereby assigns to Lessee all of its rights against the Prime
Lessor under the Prime Lease with respect to the repair or restoration of the
Premises, as a result of a casualty or the exercise of power of eminent domain,
and agrees that, if such assignment is not effective, Lessor, at Lessee's sole
cost and expense, will use reasonable efforts to cause Prime Lessor to repair or
restore the Premises.

         16. ALTERATIONS. Lessee shall not make any alterations in or additions
to the Premises (without the prior written consent of Lessor and Prime Lessor,
which consent Lessor shall not unreasonably withhold, condition or delay).
Lessee shall be solely responsible for obtaining the consent of Prime Lessor, if
such consent is required under the Prime Lease. If Alterations by Lessee are
permitted or consented to as aforesaid, Lessee shall comply with all of the
covenants of Lessor contained in the Prime Lease pertaining to the performance
of such Alterations. In addition, Lessee shall indemnify, defend and hold
harmless Lessor for, from and against liability, loss, cost, damage, liens and
expense imposed on Lessor arising out of the performance of Alterations by
Lessee, except to the extent same is caused by the negligent acts or omissions
of Lessor.

         17. SURRENDER. Upon the expiration of this Sublease, or upon the
termination of the Sublease or of the Lessee's right to possession of the
Premises, Lessee will at once surrender and deliver up the Premises, together
with all improvements thereon, to Lessor in good condition and repair,
reasonable wear and tear and, subject to Section 15 of this Sublease, casualty
damage excepted; conditions existing because of Lessee's failure to perform
maintenance, repairs or replacements as required of Lessee under this Sublease
shall not be deemed "wear and tear." Said improvements shall include all
plumbing, lighting, electrical, heating, cooling and ventilating fixtures and
equipment and other articles of personal property used in the operation of the
Premises (as distinguished from operations incident to the business of Lessee).
Lessee shall surrender to Lessor all keys to the Premises, and make known to
Lessor the combination of all combination locks which

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Lessee is permitted to leave on the Premises. All Alterations in or upon the
Premises made by Lessee shall become a part of and shall remain upon the
Premises, upon such termination without compensation, allowance or credit to
Lessee; provided, however, Lessee shall remove any Alterations made by Lessee,
or portion thereof to the extent Lessor may be required to do so by Prime
Lessor. If Prime Lessor requires removal of any Alteration made by Lessee, or a
portion thereof, and Lessee does not make such removal in accordance with this
Section, Lessor may remove the same (and repair any damage occasioned thereby),
and dispose thereof, or at its election, deliver the same to any other place of
business of Lessee, or warehouse the same. Lessee shall pay the reasonable costs
of such removal, repair, delivery and warehousing within ten (10) days following
receipt of Lessor's documented invoice therefor.

         18. REMOVAL OF LESSEE'S PROPERTY. Upon the expiration of this Sublease,
Lessee shall remove Lessee's articles of personal property incident to Lessee's
business ("Fixtures"); provided, however, to the extent Lessor is required to do
so under the Prime Lease, Lessee shall repair any injury or damage to the
Premises, which may result from such removal. If Lessee does not remove Lessee's
Trade Fixtures from the Premises, prior to the expiration or earlier termination
of the Term, Lessor may, at its option, remove the same (and repair any damage
occasioned thereby) and dispose thereof or deliver the same to any other place
of business of Lessee, or warehouse the same, and Lessee shall pay the
reasonable cost of such removal, repair, restoration, delivery or warehousing to
Lessor within ten (10) days following receipt of Lessor's documented invoice
therefor. Lessee shall pay, prior to delinquency, directly to the appropriate
taxing authorities, any personal property taxes levied or assessed against
Lessee's Trade Fixtures.

         19. HOLDING OVER. Lessee shall have no right to occupy the Premises, or
any portion thereof after the expiration of this Sublease or after termination
of this Sublease or of Lessee's right to possession as a result of an Event of
Default hereunder. In the event Lessee or any party claiming by, through or
under Lessee holds over, Lessor may exercise any and all remedies available to
it at law or in equity to recover possession of the Premises, and to recover
damages. For each and every month or partial month that Lessee or any party
claiming by, through or under Lessee remains in occupancy of all or any portion
of the Premises, after the expiration of this Sublease or after termination of
this Sublease or Lessee's right to possession, Lessee shall pay, as minimum
damages and not as a penalty, an amount equal to the sum of monthly rental at a
rate equal to double the rate of Rent, if any, payable by Lessee hereunder
immediately prior to the expiration or other termination of this Sublease or of
Lessee's right to possession. The acceptance by Lessor of any lesser sum shall
be construed as payment on account and not in satisfaction of damages for such
holding over.

         20. ENCUMBERING TITLE. Lessee shall not do any act which shall in any
way encumber the title of Prime Lessor in and to the Building or the Property,
nor shall the interest or estate of Prime Lessor or Lessor be in any way subject
to any claim by way of lien or encumbrance, whether by operation of law by
virtue of any express or implied contract by Lessee, or by reason of any other
act or omission of Lessee. Any claim to, or

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lien upon, the Premises, the Building or the Property arising from any act or
omission of Lessee shall accrue only against the sub-estate of Lessee and shall
be subject and subordinate to the paramount title and rights of Prime Lessor in
and to the Building and the Property and the interest of Lessor in the premises
leased pursuant to the Prime Lease. Without limiting the generality of the
foregoing, Lessee shall not permit the Premises, the Building or the Property to
become subject to any mechanics', laborers' or materialmen's lien on account of
labor or material furnished to Lessee or claimed to have been furnished to
Lessee in connection with work of any character performed or claimed to have
been performed on the Premises by, or at the direction or sufferance of, Lessee;
provided, however, that if so permitted under the Prime Lease, Lessee shall have
the right to contest in good faith and with reasonable diligence, the validity
of any such lien or claimed lien if Lessee shall give to Prime Lessor and Lessor
such security as may be deemed satisfactory to them to assure payment thereof
and to prevent any sale, foreclosure, or forfeiture of the Premises, the
Building or the Property by reason of nonpayment thereof; provided further,
however, that on final determination of the lien or claim of lien, Lessee shall
immediately pay any judgment rendered, with all property costs and charges, and
shall have the lien released and any judgment satisfied.

         21. INDEMNITY.

            a. INDEMNIFICATION. To the fullest extent permitted by law, each
party hereto ("Party") will, at said Party's sole cost and expense, indemnify
the other Party (a Party for all purposes of this Section 21 to be defined as
set forth in Section 21(c) below) against all Claims arising from: (i) any
Personal Injury, Bodily Injury or Property Damage whatsoever occurring in or at
the Premises, the Building and/or the Property, except to the extent caused by
the negligence and/or a breach of this Sublease by the other Party; (ii) any
Bodily Injury to an employee of a Party arising out of and in the course of
employment of the employee and occurring anywhere in the Property, except to the
extent caused by the negligence and/or a breach of this Sublease by the other
Party; (iii) the use or occupancy, or manner of use or occupancy, or conduct or
management of the Premises, or of any business therein; (iv) subject to the
waiver of subrogation provisions of this Sublease, any act, error, omission or
negligence of any of the Parties in, on or about the Premises, the Building
and/or the Property, except to the extent caused by the negligence and/or a
breach of this Sublease by the other Party; (v) the conduct of a Party's
business; (vi) any alterations, activities, work or things done, omitted,
permitted or allowed by Parties in, at or about the Premises, the Building and
the Property, including the violation of or failure to comply with, or the
alleged violation of or alleged failure to comply with any applicable laws,
statutes, ordinances, standards, rules, regulations, orders, or judgments in
existence on the date of the Sublease or enacted, promulgated or issued after
the date of this Sublease including hazardous materials laws; (vii) any breach
or default by a Party in the full and prompt payment of any amount due under
this Sublease, any breach, violation or nonperformance of any term, condition,
covenant or other obligation of a Party under this Sublease, or any
misrepresentation made by a Party, provided, however, that neither Party shall
be liable for special or consequential damages; (viii) all damages sustained by
a Party as a result of any holdover by the other Party in the Premises,
provided, however, that neither Party shall be liable

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for special or consequential damages; or (ix) any matter enumerated in Section
21(b) below.

            b. WAIVERS. To the fullest extent permitted by law, each Party
waives all Claims against the other Party arising from the following: (i) any
Personal Injury, Bodily Injury, or Property Damage occurring in or at the
Premises, the Building and/or the Property; (ii) any loss of or damage to
property of a Party located in the Premises, the Building and/or the Property by
theft or otherwise; (iii) any Personal Injury, Bodily Injury, or Property Damage
to any Party caused by other lessees of the Property, parties not occupying
space in the Property, occupants of property adjacent to the Property, or the
public or by the construction of any private, public, or quasi-public work
occurring either in the Premises, the Building and/or the Property; (iv) any
interruption or stoppage of any utility service or for any damage to persons or
property resulting from such stoppage; (v) business interruption or loss of use
of the Premises, the Building and/or the Property; (vi) any latent defect in
construction of the Premises; (vii) damages or injuries or interference with a
Party's business, loss of occupancy or quiet enjoyment and any other loss
resulting from the exercise by the other Party of any right or the performance
of any obligations under this Sublease; or (viii) any Bodily Injury to an
employee of a Party arising out of and in the course of employment of the
employee and occurring anywhere in the Premises, the Building or the Property.

            c. DEFINITIONS. For purposes of this Section 21: (i) the term
"Party" or "Parties" means Lessor and/or Lessee, as applicable, and their
respective officers, members, sublessees, shareholders, partners, venturers,
parent, subsidiaries, trustees and ancillary trustees and the respective
officers, directors, shareholders, members, parents, subsidiaries of any
affiliated entities, personal representatives, executors, heirs, assigns,
licensees, invitees. beneficiaries, agents, servants, employees and independent
contractors of these persons or entities and all persons and entities claiming
through any of these persons or entities; (ii) the term "Indemnify" means
indemnify, defend (with counsel reasonably acceptable to the Indemnified Party)
and hold free and harmless for, from and against; (iv) the term "Claims" means
all liabilities, claims, damages (including consequential damages), losses,
penalties, litigation, demands, causes of action (whether in tort or contract,
in law or at equity or otherwise), suits, proceedings, judgments, disbursements,
charges, assessments, and expenses (including reasonable attorneys' and experts'
fees and expenses incurred in investigating, defending, or prosecuting any
litigation, claim, or proceeding); (v) the term "Waives" means that the Lessee
Parties waive and knowingly and voluntarily assume the risk of; and (vi) the
terms " Bodily Injury" " Personal Injury" and " Property Damage" will have the
same meanings as in the form of commercial general insurance policy issued by
Insurance Services Office, Inc. most recently prior to the date of the injury or
loss in question.

            d. SCOPE OF INDEMNITIES AND WAIVERS. Except as provided in the
following sentence, the indemnities and waivers contained in Section 21 will
apply regardless of the active or passive negligence or sole, joint, concurrent,
or comparative negligence of any of the Parties, and regardless of whether
liability without fault or strict liability is imposed or sought to be imposed
on any of the Parties. The indemnities and

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waivers contained in Section 21 will not apply to the extent of the percentage
of liabilities that a final judgment of a court of competent jurisdiction
establishes, under the comparative negligence principles of the State of
Arizona, that a Claim against a Party was proximately caused by the willful
misconduct or negligence of that Party; provided, however, that in such event
the indemnity or waiver will remain valid for all other Parties.

            e. OBLIGATIONS INDEPENDENT OF INSURANCE. The indemnification
provided in Section 21(a) may not be construed or interpreted as in any way
restricting, limiting or modifying Lessee's insurance or other obligations under
this Sublease, and the provisions of Section 21(a) are independent of Lessee's
insurance and other obligations. Lessee's compliance with the insurance
requirements and other obligations under this Sublease does not in any way
restrict, limit or modify Lessee's indemnification obligations under this
Sublease.

            f. SURVIVAL. The provisions of this Section 21 will survive the
expiration or earlier termination of this Sublease until all Claims against any
Parties involving any of the indemnified or waived matters are fully and finally
barred by the applicable statutes of limitations.

            g. DUTY TO DEFEND. A Party's duty to defend the other Party is
separate and independent of a Party's duty to Indemnify a Party. A Party's duty
to defend includes Claims for which the other Party may be liable without fault
or may be strictly liable. A Party's duty to defend applies regardless of
whether issues of negligence, liability, fault, or default have been determined.
A Party's duty to defend applies immediately, regardless of whether the Parties
have paid any sums or incurred any detriment arising out of or relating,
directly or indirectly, to any Claims. It is the express intention of Lessor and
Lessee that a Party will be entitled to obtain summary adjudication regarding
the other Party's duty to defend at any stage of any Claim within the scope of
this Section 21.

            h. WAIVER OF SUBROGATION. In addition to the waiver of subrogation
contained in Section 21(b), each Party hereby waives its rights and the
subrogation rights of its insurer against the other Party and any other lessees
of space in the Building or the Property, as well as their respective members,
officers, employees, agents, authorized representatives and invitees, with
respect to any claims including, but not limited to, claims for injury to any
persons and/or damage to the Premises, and/or any fixtures, equipment, personal
property, furniture, improvements and/or alterations in or to the Premises,
which are caused by or result from (a) risks or damages required to be insured
against under a policy of property insurance under this Sublease or under the
Prime Lease, or (b) risks and damages which are in fact insured against by one
or more property insurance policies maintained by either Party from time to
time. It is the intent of the Parties that with respect to any loss from a named
peril required to be covered under a policy of property insurance, each Party
will look solely to its insurance companies for recovery. Each Party shall
obtain from its insurers under each policy required by this

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Sublease or under the Prime Lease a waiver of all rights of subrogation which
such insurers of such Party might otherwise have against the other Party.

         22. LESSOR'S RESERVED RIGHTS. Lessor reserves and shall at any and all
reasonable times with reasonable notice have the right to enter the Premises, to
inspect the same for the purposes of inspecting the performance by Lessee of the
terms and conditions of this Sublease. In addition, Lessor expressly reserves
for its benefit a reasonable right of access through, above and below the
Premises, including the right to run cabling and wiring. Lessor reserves the
right to enter the Premises, at reasonable times to post notices of
non-responsibility, to alter, improve or repair the Premises. In exercising the
rights reserved by Lessor, Lessor shall use commercially reasonable efforts to
not unreasonably interfere with the conduct by Lessee of its business in the
Premises, and the exercise by Lessor of its rights pursuant to this Section 22
shall not entitle Lessee to an abatement of Rent unless such exercise materially
prevents Lessee from conducting its business operations in the Premises. Nothing
in this Section 22 shall be construed as obligating Lessor to perform any
repairs, alterations or maintenance to the Premises.

         23. DEFAULTS. Lessee further agrees that the occurrence of any one or
more of the following events shall be considered an Event of Default:

            a. Lessee shall be adjudged an involuntary bankrupt, or a decree or
order approving, as properly filed, a petition or answer filed against Lessee
asking reorganization of Lessee under the Federal bankruptcy laws as now or
hereafter amended, or under the laws of any State, shall be entered, and any
such decree of judgment or order shall not have been vacated or stayed or set
aside within sixty (60) days from the date of the entry or granting thereof; or

            b. Lessee shall file, or admit the jurisdiction of the court and the
material allegations contained in, any petition in bankruptcy, or any petition
pursuant or purporting to be pursuant to the Federal bankruptcy laws now or
hereafter amended, or Lessee shall institute any proceedings for relief of
Lessee under any bankruptcy or insolvency laws or any laws relating to the
relief of debtors, readjustment of indebtedness, reorganization, arrangements,
composition or extension; or

            c. Lessee shall make any assignment for the benefit of creditors or
shall apply for a consent to the appointment of a receiver for Lessee or any of
the property of Lessee; or

            d. Lessee shall admit in writing its inability to pay its debts as
they become due; or

            e. The Premises are levied on by any revenue officer or similar
officer; or

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            f. A decree or order appointing a receiver of the property of Lessee
shall be made and such decree or order shall not have been vacated, stayed or
set aside within sixty (60) days from the date of entry or granting thereof; or

            g. Lessee shall abandon the Premises during the Term hereof; or

            h. Lessee shall default in any payment of Rent required to be made
by Lessee hereunder when due as herein provided and such default shall continue
for three (3) days after notice thereof in writing to Lessee; or

            i. Lessee shall default in securing insurance or in providing
evidence of insurance as set forth in Section 11 of this Sublease or shall
default with respect to lien claims as set forth in Section 20 of this Sublease
and either such default shall continue for five (5) days after notice thereof in
writing to Lessee; or

            j. Lessee shall, by its act or omission to act, cause a default
under the Prime Lease and such default shall not be cured within the time, if
any permitted for such cure under the Prime Lease; or

            k. Lessee shall default in any of the other covenants and agreements
herein contained to be kept, observed and performed by Lessee, and such default
shall continue for twenty (20) days after notice thereof in writing to Lessee,
provided that if the nature of Lessee default is such that more than twenty (20)
days are reasonably required for its cure, then Lessee shall not be deemed in
default if Lessee commences such cure within said 20-day period and thereafter
diligently prosecutes such cure to completion.

         24. REMEDIES. Upon the occurrence of any one or more Events of Default,
Lessor may exercise the rights and remedies available to Lessor at law, in
equity, by statute or otherwise and Lessor may exercise any remedy against
Lessee which Prime Lessor may exercise for default by Lessor under the Prime
Lease. All of the remedies given to Lessor in this Sublease in the event Lessee
commits an Event of Default shall be construed and held to be cumulative and no
one of them shall be exclusive of the other.

         25. SECURITY DEPOSIT. Lessor acknowledges and agrees that it holds the
Security Deposit as specified in Section 1 as security for the prompt, full and
faithful performance by Lessee of each and every provision of this Sublease and
of all obligations of Lessee hereunder. If Lessee fails to perform any of its
obligations hereunder, Lessor may use, apply, retain or hold any part of the
Security Deposit for the payment of: (a) any Base Rent or other sums of money
which Lessee may not have paid when due; (b) any sum expended by Lessor on
Lessee's behalf in accordance with the provisions hereof; or (c) any sum which
Lessor may expend or may be required to expend by reason of Lessee's default
hereunder. The use, application or retention of the Security Deposit or any
portion thereof, shall not prevent Lessor from exercising any other right or
remedy provided by this Sublease or available to Lessor at law or in equity. If
Lessee shall fully and faithfully comply with all of the provisions of this
Sublease, the Security Deposit, or

                                       11
<PAGE>

any balance thereof, shall be returned to Lessee without interest within thirty
(30) days of expiration of the Term.

         26. NOTICES AND CONSENTS. All notices, demands, request, consents or
approvals which may or are required to be given by either party to the other
shall be in writing and shall be deemed given when received or refused if
personally delivered, if sent by United States registered or certified mail,
postage prepaid, return receipt requested or if sent by overnight commercial
courier service (a) if to Lessee, addressed to Lessee at the address specified
in Section 1(b) or at such other place as Lessee may from time to time designate
by notice in writing to Lessor, or (b) if for Lessor, addressed to Lessor at the
address specified in Section 1(c) or at such other place as Lessor may from time
to time designate by notice in writing to Lessee. Each party agrees promptly to
deliver a copy of each notice, demand, request, consent or approval from such
party to Prime Lessor and promptly to deliver to the other party a copy of any
notice, demand, request, consent or approval received from Prime Lessor. Such
copies shall be delivered by overnight commercial courier. Notice by a party may
be given by legal counsel to such party.

         27. PROVISIONS REGARDING SUBLEASE. Except as specifically provided
herein, this Sublease and all the rights of parties hereunder are subject and
subordinate to the Prime Lease. Lessee and Lessor (provided Lessee is not then
in default under this Sublease) each agree that it will not, by its act or
omission to act, cause a default under the Prime Lease. Subject to the terms and
conditions of this Sublease, Lessor shall be responsible for all Claims under
the Prime Lease prior to the commencement date of the Original Sublease and
thereafter for all Claims relating to those portions of the Building of which it
is actually in possession for the time periods during which it was actually in
possession of such portions of the Building. Lessee shall be responsible for all
Claims arising from or relating to the Premises following the Commencement Date.
In furtherance of the foregoing, the parties hereby confirm, each to the other,
that it is not practical in this Sublease to enumerate all of the rights and
obligations of the various parties under the Prime Lease and specifically to
allocate those rights and obligations in this Sublease. Accordingly, in order to
afford to Lessee the benefits of this Sublease and of those provisions of the
Prime Lease which by their nature are intended to benefit the party in
possession of the Premises, and in order to protect Lessor against a default by
Lessee which might cause a default or event of default by Lessor under the Prime
Lease:

            a. Lessee and Lessor shall pay, when and as due, all base rent,
additional rent and other charges payable under the Prime Lease as otherwise set
forth herein.

            b. Except as otherwise expressly provided herein, Lessee shall
perform all affirmative covenants and shall refrain from performing any act
which is prohibited by the negative covenants of the Prime Lease, where the
obligation to perform or refrain from performing is by its nature imposed upon
the party in possession of the Premises. If practicable, Lessee shall perform
affirmative covenants which are also covenants of Lessor under the Prime Lease
at least five (5) days prior to the date when

                                       12
<PAGE>

Lessor's performance is required under the Prime Lease. Lessor shall have the
right to enter the Premises to cure any default by Lessee under this Sublease
provided that Lessee is first given written notice and opportunity to cure in
accordance with the provisions of this Sublease.

            c. Lessor shall not agree to an amendment to the Prime Lease which
might have an adverse effect on Lessee's occupancy of the Premises, or its use
of the Premises, for their intended purpose, unless Lessor shall first obtain
Lessee's prior written approval thereof which approval may be withheld in
Lessee's reasonable discretion.

            d. Lessor hereby grants to Lessee the right to receive all of the
services and benefits with respect to the Premises, which are to be provided by
Prime Lessor under the Prime Lease. Lessor shall have no duty to perform any
obligations of the Prime Lessor which are, by their nature, the obligation of an
owner or manager of real property. For example, Lessor shall not be required to
provide the services or repairs which the Prime Lessor is required to provide
under the Prime Lease. Lessor shall have no responsibility for or be liable to
Lessee for any default, failure or delay on the part of Prime Lessor in the
performance or observance by Prime Lessor of any of its obligations under the
Prime Lease, nor shall such default by Prime Lessor affect this Sublease or
waive or defer the performance of any of Lessee's obligations hereunder except
to the extent that such default by Prime Lessor excuses performance by Lessor
under the Prime Lease. Notwithstanding the foregoing, the parties contemplate
that Prime Lessor shall, in fact, perform its obligations under the Prime Lease
and in the event of any default or failure of such performance by Prime Lessor,
Lessor agrees that it will, upon notice from Lessee, make demand upon Prime
Lessor to perform its obligations under the Prime Lease and, provided that
Lessee specifically agrees to pay all reasonable costs and expenses of Lessor
and provides Lessor with security reasonably satisfactory to Lessor to pay such
costs and expenses, Lessor will take appropriate legal action to enforce the
Prime Lease.

         28. ADDITIONAL SERVICES. Lessor shall cooperate with Lessee to cause
Prime Lessor to provide services required by Lessee in addition to those
otherwise required to be provided by Prime Lessor under the Prime Lease. Lessee
shall pay Prime Lessor's charge for such services promptly after having been
billed therefor by Prime Lessor or by Lessor. If at any time a charge for such
additional services is attributable to the use of such services both by Lessor
and by Lessee, the cost thereof shall be equitably divided by Lessor between
Lessor and Lessee.

         29. BROKERAGE. Each party warrants to the other that it has had no
dealing with any broker or agent in connection with this Sublease and covenants
to pay, hold harmless and indemnify the other party for, from and against any
and all costs (including reasonable attorneys' fees), expense or liability for
any compensation, commissions and charges claimed by any broker or agent with
respect to this Sublease or the negotiation thereof on behalf of such party.

                                       13
<PAGE>

         30. FORCE MAJEURE. With the exception of monetary defaults, neither
Party shall be deemed in default with respect to any of the terms, covenants and
conditions of this Sublease to be performed, if the failure to timely perform
same is due in whole or in part to any strike, lockout, labor trouble (whether
legal or illegal), civil disorder, failure of power, restrictive governmental
laws and regulations, riots, insurrections, war, shortages, accidents,
casualities, acts of God, acts caused directly by the other Party's agents,
employees and invitees or any other cause beyond the reasonable control of the
Party whose performance has been delayed.

         31. SIGNAGE. Lessor grants Lessee the right to maintain its sign on the
exterior of the Building subject to the Prime Lease, approval of Prime Lessor
and Lessee's compliance with all applicable code requirements. To the extent the
consent of Prime Lessor under the Prime Lease is necessary for Lessee to
maintain or replace its signage, Lessor grants to Lessee the right to seek such
approval.

         32. PARKING. Lessor and Lessee acknowledge and agree that under the
Prime Lease, Lessor is entitled to the use of one hundred thirty-seven (137)
vehicle parking spaces on the Property. Lessor hereby grants Lessee the right to
use all such spaces.

         33. MISCELLANEOUS.

            a. ENTIRE AGREEMENT, AMENDMENTS. This Sublease and any Exhibits and
Riders attached hereto and forming a part hereof, set forth all of the
covenants, promises, agreements, conditions and understandings between Lessor
and Lessee concerning the Premises, and there are no covenants, promises,
agreements, representations, warranties, conditions or understandings either
oral or written between them concerning the Premises other than as contained in
this Sublease. Except as otherwise provided in this Sublease, no subsequent
alteration, amendment, change or addition to this Sublease shall be binding
unless it is in writing and signed by both Lessor and Lessee.

            b. TIME IS OF THE ESSENCE. Time is of the essence of each and every
term, covenant and condition of this Sublease.

            c. BINDING EFFECT. The covenants and conditions of this Sublease
shall, subject to the restrictions on assignment and subletting, apply to and
bind the heirs, executors, administrators, personal representatives, successors
and assigns of the parties hereto.

            d. RECORDATION. Neither this Sublease nor any memorandum hereof
shall be recorded by Lessee. At the sole option of Lessor, Lessee and Lessor
shall execute, and Lessor may record, a short form memorandum of this Sublease
in form and substance satisfactory to Lessor.

                                       14
<PAGE>

            e. GOVERNING LAW. This Sublease and all the terms and conditions
thereof shall be governed by and construed in accordance with the laws of the
State of Arizona.

            f. DEFINED TERMS AND PARAGRAPH HEADINGS. The words "Lessor" and
"Lessee" as used in this Sublease shall include the plural as well as the
singular. Words used in masculine gender include the feminine and neuter. The
paragraph headings and titles to the paragraphs of this Sublease are not a part
of this Sublease and shall have no effect upon the construction or
interpretation of any part hereof

            g. REPRESENTATIONS AND WARRANTIES OF LESSEE. Lessee represents and
warrants to Lessor as follows:

               1. Lessee has been duly organized, is validly existing, and is in
good standing under the laws of its state of incorporation and is qualified to
transact business in Arizona. All necessary action on the part of Lessee has
been taken to authorize the execution, delivery and performance of this Sublease
and of the other documents, instruments and agreements, if any, provided for
herein. The persons who have executed this Sublease on behalf of Lessee are duly
authorized to do so;

               2. This Sublease constitutes the legal, valid and binding
obligation of Lessee, enforceable against Lessee in accordance with its terms,
subject, however, to bankruptcy, insolvency, reorganization, arrangement,
moratorium or other similar laws relating to or affecting the rights of
creditors generally, general principles of equity, whether enforceability is
considered in a proceeding in equity or at law, and to the qualification that
certain waivers, procedures, remedies and other provisions of this Sublease may
be unenforceable under or limited by applicable law, however, none of the
foregoing shall prevent the practical realization to Lessor of the benefits
intended by this Sublease;

               3. To its actual knowledge, there are no suits, actions,
proceedings or investigations pending, or to the best of its knowledge,
threatened against or involving Lessee before any court, arbitrator or
administrative or governmental body which might reasonably result in any
material adverse change in the contemplated business, condition or operations of
Lessee;

               4. To its actual knowledge, Lessee is not, and the execution,
delivery and performance of this Sublease and the documents, instruments and
agreements, if any, provided for herein will not result in any breach of or
default under any other document, instrument or agreement to which Lessee is a
party or by which Lessee is subject or bound;

               5. Lessee has or will obtain before or within ninety (90) days
following the Commencement Date all required licenses and permits, both
governmental and private, relating to the Premises.

                                       15
<PAGE>

            h. REPRESENTATIONS AND WARRANTIES OF LESSOR. Lessor represents and
warrants to Lessee as follows:

               1. Lessor has been duly organized, is validly existing, and is in
good standing under the laws of its state of incorporation and is qualified to
transact business in Arizona. All necessary action on the part of Lessor has
been taken to authorize the execution, delivery and performance of this Sublease
and of the other documents, instruments and agreements, if any, provided for
herein. The persons who have executed this Sublease on behalf of Lessor are duly
authorized to do so;

               2. This Sublease constitutes the legal, valid and binding
obligation of Lessor, enforceable against Lessor in accordance with its terms,
subject, however, to bankruptcy, insolvency, reorganization, arrangement,
moratorium or other similar laws relating to or affecting the rights of
creditors generally, general principles of equity, whether enforceability is
considered in a proceeding in equity or at law, and to the qualification that
certain waivers, procedures, remedies and other provisions of this Sublease may
be unenforceable under or limited by applicable law, however, none of the
foregoing shall prevent the practical realization to Lessee of the benefits
intended by this Sublease;

               3. To Lessor's actual knowledge, there are no suits, actions,
proceedings or investigations pending, or to the best of its knowledge,
threatened against or involving Lessor before any court, arbitrator or
administrative or governmental body which might reasonably result in any
material adverse change in the contemplated business, condition or operations of
Lessor;

               4. To Lessor's actual knowledge, and subject to Prime Lessor's
approval, the execution, delivery and performance of this Sublease and the
documents, instruments and agreements, if any, provided for herein, will not
result in any breach of or default under the Prime Lease, any other document,
instrument or agreement to which Lessor is a party or by which Lessor is subject
or bound;

               5. To Lessor's actual knowledge, neither Lessor, its contractors,
licensees, invitees. employees or agents have disposed or released any hazardous
materials on or under the Premises, Building or Property, except in compliance
with the terms and conditions of the Prime Lease and applicable environmental
laws.

            i. NO WAIVER. The failure of either party to insist in any one or
more instances upon the strict performance of any one or more of the obligations
of this Sublease, or to exercise any election herein contained, shall not be
construed as a waiver or relinquishment for the future of the performance of
such one or more obligations of this Sublease or the right to exercise such
election, but the same shall continue and remain in full force and effect with
respect to any subsequent breach, act or omission.

            j. SEVERABILITY. If any clause or provision of this Sublease is or
becomes illegal or unenforceable because of any present or future law or
regulation of

                                       16
<PAGE>

any governmental body or entity effective during the Sublease Term, the
intention of the parties is that the remaining provisions of this Sublease shall
not be affected thereby.

            k. EXHIBITS. If any provision contained in an Exhibit, Rider or
Addenda to this Sublease is inconsistent with any other provision of this
Sublease, the provision contained in this Sublease shall supersede the
provisions contained in such Exhibit, Rider or Addenda, unless otherwise
provided.

            l. FAIR MEANING. The language of this Sublease shall be construed to
its normal and usual meaning and not strictly for or against either Lessor or
Lessee. Lessor and Lessee acknowledge and agree that each party has reviewed and
revised this Sublease and that any rule of construction to the effect that
ambiguities are to be resolved against the drafting party shall not apply to the
interpretation of this Sublease, or any Exhibits, Riders or amendments hereto.

            m. NO MERGER. The voluntary or other surrender of this Sublease by
Lessee or a mutual cancellation of this Sublease shall not work as a merger and
shall, at Lessor's option, either terminate any or all existing subleases or
subtenancies, or operate as an assignment to Lessor of any or all of such
subleases or subtenancies.

         34. HAZARDOUS MATERIALS. Neither Lessor nor Lessee shall introduce,
release, deposit or store within the Premises any hazardous substances or toxic
materials. The provisions of this Section 34 shall not, however, extend to
reasonable quantities of hazardous or toxic materials typically and customarily
used in connection with first-class office operations, provided that such
materials are used and stored in accordance with the codes and ordinances of
governmental authorities having jurisdiction and in accordance with any storage
requirements set forth on the containers for such materials or substances.

         35. ESTOPPEL CERTIFICATE. Each of Lessee and Lessor shall, whenever
requested by the other, without charge and within twenty (20) days after written
request, execute, acknowledge and deliver to the other a statement in writing to
such Party's actual knowledge and based upon the then current facts as known to
such Party, certifying that: (a) this Sublease is unmodified and in full force
and effect (or if modified, stating the nature of such modification and
certifying that this Sublease, as so modified, is in full force and effect); (b)
the dates to which Rent and other charges are paid; (c) that there are not to
such parties knowledge, any uncured defaults on the part of the other under this
Sublease or specifying such defaults if any are claims; and (d) such other
information as may be reasonably requested and as may be factually accurate.

         36. ATTORNEYS' FEES. In the event that it becomes necessary for either
Lessor or Lessee to employ an attorney to enforce any of the terms or provisions
of this Sublease, the prevailing party shall be entitled to all of its
reasonable attorneys' fees and court costs (if any) in connection therewith, the
amount to be fixed by the court without a jury.

                                       17
<PAGE>

         IN WITNESS WHEREOF, the parties have executed this Sublease the day and
year first above written.

Lessor:                                     Lessee:

Action Performance Companies, Inc.,         Integrated Information Systems, Inc.
an Arizona corporation                      a Delaware corporation

By: /s/ R. David Martin                     By:  /s/ William A. Mahan
Name:  R. David Martin                      Name:  William A. Mahan
Title: Chief Financial Officer              Title: EVP & Chief Financial Officer

                                       18<PAGE>

                                                                   Exhibit 10.51

                              SETTLEMENT AGREEMENT

         THIS AGREEMENT (the "Agreement") is made and entered into as of October
14, 2002 by and between INTEGRATED INFORMATION SYSTEMS, INC., a Delaware
corporation (and successor by merger to Integrated Information Systems, Inc., an
Arizona corporation) ("IIS"), and COMERICA BANK - CALIFORNIA, a California
corporation, on behalf of itself and all of its divisions (collectively,
"Comerica"). (IIS, on the one hand, and Comerica on the other hand, shall be
referred to herein collectively as the "Parties" and each, as a "Party").

                                    RECITALS

         A. IIS and Comerica are parties to those certain agreements more
particularly described on Exhibit A attached hereto (collectively, the
"Agreements").

         B. Certain disputes have arisen between IIS and Comerica with respect
to the rights and obligations of the Parties under the Agreements and otherwise.
On or about August 13, 2002, IIS filed suit against Comerica in the Maricopa
County Superior Court, Phoenix, Civil Action No. CV2002-015787 (the
"Litigation").

         C. To settle their dispute and avoid the cost, distraction and
uncertainty of further litigation, the Parties have decided to settle the claims
asserted by IIS against Comerica in the Litigation ("Claims"), as well as any
other obligations or potential claims either party may have against the other
under the Agreements or otherwise, except for the obligations expressly set
forth in this Agreement. By agreeing to this settlement, neither Party admits
the validity of the other Party's claims or defenses or threatened claims or
defenses.

                                    AGREEMENT

         NOW, THEREFORE, in consideration of the acts, payments, covenants and
mutual agreements herein described and agreed to be performed, and for other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, IIS and Comerica do hereby mutually agree as follows:

         1. Definitions.

            1.1 "Approval Contingency" is defined in Section 2.3 of this
Agreement.

            1.2 "Liability" means, to the extent based in any way upon or
relating in any way to acts, omissions or circumstances occurring or existing
(whether known or unknown) before or after the date of this Agreement, any
liability, obligation or responsibility of any kind, character or description,
regardless of the legal principle or theory upon which the same may be based,
whether known or unknown, liquidated or unliquidated, contingent or absolute,
accrued or unaccrued, matured or unmatured, insured or uninsured, joint or
several, determined or undetermined, determinable or otherwise, and shall
include, without limitation, any claim, judgment, litigation, proceeding, damage
(including, without limitation, actual, punitive and consequential damages),
loss, penalty, strict or other liability in tort, liability for any breach of
contract or agreement, civil or criminal violation of law, cost, expense
(including, without

<PAGE>

limitation, attorneys' fees and costs), cost of defending any claim, amount or
cost of any judgment or settlement.

            1.3 "Person" means any natural person, corporation, company,
partnership, association, trust, estate, or other entity or organization, the
media, and any governmental representative, agency or authority.

            1.4 "Warrant" means that certain Warrant, issued as of December 18,
1997, by IIS to Imperial Bank, a California banking corporation, predecessor in
interest to Comerica, a copy of which is attached hereto as Exhibit B.

         2. Settlement Payment and Termination of Agreements.

            2.1 Payment. Upon execution and delivery of this Agreement and
satisfaction of the Approval Contingency, IIS shall pay to Comerica an amount
equal to $400,000.00 (the "Settlement Amount") by wire transfer or in other
immediately available funds, within three (3) business days after satisfaction
of the Approval Contingency. In the event that the Settlement Amount is not paid
by the close of business on November 5, 2002, this Agreement shall be terminated
automatically.

            2.2 Termination of Agreements.

                2.2.1 Upon execution and delivery of this Agreement,
satisfaction of the Approval Contingency and payment of the Settlement Amount,
all obligations and liens under the Agreements shall be deemed fully satisfied,
discharged and released and the Agreements shall automatically terminate and be
of no further force and effect; provided, that notwithstanding any provision of
this Agreement to the contrary, the Warrant shall remain in full force and
effect according to its terms.

                2.2.2 Upon execution and delivery of this Agreement,
satisfaction of the Approval Contingency and payment of the Settlement Amount,
Comerica authorizes IIS to complete and file one or more UCC financing statement
amendments as may be necessary to terminate any financing statement(s)
previously filed which name IIS as the debtor and constitutes IIS its
attorney-in-fact and agent to sign the names of Comerica and its predecessors
and affiliates to any such financing statements.

            2.3 Approval Contingency. The obligations of IIS under this
Agreement are subject to the condition that IIS shall have obtained on or before
October 31, 2002 (i) the approval of the IIS Board of Directors of this
Agreement; (ii) accounts receivable backed financing or terms and conditions
satisfactory to IIS and its lender (the "New Lender") and (iii) acceptance of
settlement offers by the major creditors of IIS designated by IIS and the New
Lender (the "Approvals and Financing") and shall have notified Comerica in
writing that the Approvals and Financing have been obtained (the "Approvals
Contingency").

         3. Mutual Release, Indemnity and Covenant Not to Sue. For good and
valuable consideration, upon execution and delivery of this Agreement and
satisfaction of the Approval Contingency and payment of the Settlement Amount:

                                       2
<PAGE>

            3.1 Each Party hereby releases, exonerates and forever and
unconditionally discharges the other Party and its respective officers,
directors, predecessors, successors, employees, representatives, shareholders,
attorneys, and assigns from any and all Liability now or hereafter relating to,
or arising directly or indirectly out of, the Claims, the Litigation, the
Agreements, the relationship between the parties or otherwise, except: (i) for
the obligations expressly set forth in this Agreement; and (ii) that Comerica
will retain the Warrant.

            3.2 Each of the Parties expressly waives any benefits it may have
under Section 1542 of the Civil Code of the State of California which provides
as follows:

            "A general release does not extend to claims which the creditor does
            not know or suspect to exist in his favor at the time of executing
            the release, which if known by him must have materially affected his
            settlement with the debtor,"

and any and all provisions, rights, and benefits of any similar statute or law
of Arizona or of any other jurisdiction, to the fullest extent it may lawfully
waive such provisions, rights or benefits. The Parties acknowledge that they are
aware that they may hereafter discover facts in addition to or different from
those which they now know or believe to be true with respect to the subject
matter of this Agreement, but it is their intention to and they do hereby fully,
finally, and forever settle and release any and all claims encompassed by this
Agreement, known or unknown, suspected or unsuspected, claimed or concealed,
asserted or unasserted, contingent or noncontingent, which now exist, may
hereafter exist, or may heretofore have existed, and without regard to the
subsequent discovery or existence of such different or additional facts.

            3.3 No Party will seek recovery of fees, costs or expenses,
including without limitation attorneys' fees or costs, against any other Party
with respect to this Agreement or the matters that are the subject of this
Agreement, each Party to bear its own such fees, costs and expenses. Within five
(5) business days after the execution and delivery of this Agreement by both
parties, IIS and Comerica will cause their attorneys to file in the Litigation a
stipulation for dismissal with prejudice.

            3.4 Each Party agrees and covenants (i) to indemnify, defend and
hold the other Party harmless from any action, proceeding or claim of any kind
by any person in any court or agency or before any arbitral or other tribunal in
respect of any matter released by such indemnifying Party in this Agreement or
any Liability associated therewith, and (ii) to take all necessary actions to
ensure that no other person within its direct or indirect control shall assert
or commence any action, proceeding or claim of any kind in any court or agency
or before any arbitral or other tribunal in respect of any such matter or any
Liability associated therewith or to encourage, assist or cooperate with any
person pursuing or asserting any such matter.

            3.5 The Parties agree that in entering this Agreement, it is
understood and agreed that each Party relies wholly upon its own judgment,
belief and knowledge and that no representations or statements regarding the
above-mentioned matters or regarding any other matters made by the other Party
or the others who are hereby released or by any other person or persons
representing them has influenced either Party to any extent whatsoever in
entering this Agreement.

                                       3
<PAGE>

            3.6 Comerica represents and warrants that it has not assigned or
subrogated any of the Claims or Agreements or authorized any other person or
entity to assert any Claim in its stead or on its behalf.

         4. Confidentiality. The Parties shall maintain in confidence and shall
not disclose the existence or terms of this Agreement or any of the facts and
circumstances surrounding this Agreement, including without limitation those
concerning or related to the Claims and the Litigation, to any person other than
as required by applicable law or with the prior written consent of the other
Party; provided, that IIS may disclose this Agreement to its lenders and
auditors. However, this Confidentiality clause shall not prohibit the parties
from abiding by subpoenas or other forms of legal process, including regulatory
inquiries from governmental bodies.

         5. No Admission. The Parties agree that this Agreement and the terms
and conditions hereof, may never be construed as a confession or admission of
liability by either Party in any suit or proceeding or admitted into evidence
against either Party, except in any litigation arising out of this Agreement.

         6. Remedies. Except as expressly stated herein, this Agreement is fully
effective upon execution and delivery by the parties. Except as expressly stated
herein, this Agreement is not dependent upon and may not be defeated by any
further performance or non-performance of any obligations, conditions,
covenants, promises, warranties or similar undertakings to be performed or not
to be performed in the future by the parties. Except as expressly stated herein,
the breach of any such duties or this Agreement (other than payment of the
Settlement Amount) shall give rise only to a cause of action for that breach and
shall not reinstate the Claims released, or the Agreements terminated, under
this Agreement.

         7. Successors and Assigns. This Agreement is and shall be binding upon
(i) the officers, directors, successors and assigns of each Party, (ii) each
past, present, direct or indirect parent, subsidiary, division or affiliated
entity of each Party, and (iii) each past or present agent, representative or
shareholder of the respective Parties.

         8. Governing Law. This Agreement shall in all respects be interpreted,
construed and governed by and in accordance with the laws of the State of
Arizona, disregarding any conflicts of law provision which may otherwise require
the application of the law of another jurisdiction.

         9. Counterparts. This Agreement may be executed in counterparts,
including by telecopy signatures, each of which shall be deemed an original, but
all of which together shall constitute one and the same agreement.

         10. Entire Agreement. This Agreement constitutes the entire agreement
among the Parties with respect to the subject matter hereof. This Agreement
shall not be terminated, altered, amended, modified or otherwise changed by any
oral communications of any kind or character, or by any written communication,
unless signed by a duly authorized representative of each of the Parties.

                                       4
<PAGE>

         11. Notices. Any notices that may be required under this Agreement
shall be in writing, shall be effective on the earlier of the date when
received, the date of telecopy machine confirmation, or the third day following
mailing, and shall be given by personal service, by certified or registered mail
return receipt request, or by telecopy, with machine confirmation of receipt, to
the addresses set forth below, or to such other addresses as may be specified in
writing to all parties hereto.

                  If to IIS:

                           1480 South Hohokam Drive
                           Tempe, Arizona 85281
                           Attn: Mark Rogers
                           Facsimile (480) 317-8010

                  With a copy to:

                           Osborn Maledon, P.A.
                           2929 N. Central Ave., Suite 2100
                           Phoenix, Arizona 85012-2794
                           Attn: William M. Hardin, Esq.
                           Facsimile: (602) 640-9050

                  If to Comerica:

                           Comerica Bank - California
                           9220 South La Cienega Blvd., Suite 623
                           Inglewood, California 90301
                           Attn: Gary Irick
                           Facsimile: (310) 338-6160

                  With a copy to:

                           Quarles & Brady Streich Lang, LLP
                           Two North Central
                           Phoenix, Arizona 85004
                           Attn: John R. Clemency
                           Facsimile: (602) 229-5412

         12. Additional Acts and Documents. Each Party hereto agrees promptly to
do all such things and take all such actions, and to make, execute and deliver
such other documents and instruments (including, but not limited to UCC
termination statements), as shall be reasonably requested to carry out the
provisions, intent and purpose of this Agreement.

         13. Authority. Each party warrants that any person executing this
Agreement on its behalf has the full authority to do so.

                                       5
<PAGE>

         IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly
executed by their duly authorized representatives with effect from the date
first set forth above.

                                            INTEGRATED INFORMATION SYSTEMS, INC.

                                            By:  /s/ Mark N. Rogers
                                            Name:  Mark N. Rogers
                                            Title:  SVP, General Counsel

                                            COMERICA BANK - CALIFORNIA

                                            By:  /s/ Gary Irick
                                            Name:  Gary Irick
                                            Title:  Vice President

                                       6

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