<PAGE>
 
                                                                    EXHIBIT 10.9

                               STANDARD SUBLEASE
                  American Industrial Real Estate Association

                         [LOGO of AMERICAN INDUSTRIAL]

1. PARTIES.  This Sublease, dated, for reference purposes only, September 9th, 
1997, is made by and between Javelin Systems, Inc., a Delaware Corporation 
(herein called "Sublessor") and D. Howard Lewis & William R. Miller (herein 
called "Sublessee").

2. PREMISES.  Sublessor hereby subleases to Sublessee and Sublessee hereby 
subleases from Sublessor for the term, at the rental, and upon all of the 
conditions set forth herein, that certain real property situated in the County 
of Orange, State of California, commonly known as 2882-C Walnut Avenue, Tustin 
and described as an approximately 3,949 square foot planned unit development 
unit located in the Park Irvine Business Center. Said real property, including 
the land and all improvements thereon, is hereinafter called the "Premises".

3. TERM.
   3.1 TERM.  The term of this Sublease shall be for Thirteen months commencing 
on October 1, 1997 and ending on October 31, 1998 unless sooner terminated 
pursuant to any provision hereof.

   3.2 DELAY IN COMMENCEMENT.  Notwithstanding said commencement date, if for 
any reason Sublessor cannot deliver possession of the Premises to Sublessee on 
said date, Sublessor shall not be subject to any liability therefore, nor shall 
such failure affect the validity of this Lease or the obligations of Sublessee 
hereunder or extend the term hereof, but in such case Sublessee shall not be 
obligated to pay rent until possession of the Premises is tendered to Sublessee;
provided, however, that if Sublessor shall not have delivered possession of the 
Premises within sixty (60) days from said commencement date. Sublessee may, at 
Sublessee's option, by notice in writing to Sublessor within ten (10) days 
thereafter, cancel this Sublease, in which event the parties shall be discharged
from all obligations thereunder. If Sublessee occupies the Premises prior to
said commencement date, such occupancy shall be subject to all provisions
hereof, such occupancy shall not advance the termination date and Sublessee
shall pay rent for such period at the initial monthly rates set forth below.

4. RENT.  Sublessee shall pay to Sublessor as rent for the Premises equal 
monthly payments of $2,965.00, in advance, on the 1st day of each month of the 
term hereof. Sublessee shall pay Sublessor upon the execution hereof $2,965.00
as rent for October 1, 1997 through October 31, 1997. Rent for any period during
the term hereof which is for less than one month shall be a prorata portion of 
the monthly installment. Rent shall be payable in lawful money of the United 
States to Sublessor at the address stated herein or to such other persons or at 
such other places as Sublessor may designate in writing.

5. SECURITY DEPOSIT.  Sublessee shall deposit with Sublessor upon execution 
hereof $3,000.00 as security for Sublessee's faithful performance of Sublessee's
obligations hereunder. If Sublessee fails to pay rent or other charges due 
hereunder, or otherwise defaults with respect to any provision of this Sublease,
Sublessor may use, apply or retain all or any portion of said deposit for the 
payment of any rent or other charge in default or for the payment of any other 
sum to which Sublessor may become obligated by reason of Sublessee's default, or
to compensate Sublessor for any loss or damage which Sublessor may suffer 
thereby. If Sublessor so uses or applies all or any portion of said deposit, 
Sublessee shall within ten (10) days after written demand therefore deposit cash
with Sublessor in an amount sufficient to restore said deposit to the full
amount hereinabove stated and Sublessee's failure to do so shall be a material
breach of this Sublease. Sublessor shall not be required to keep said deposit
separate from its general accounts. If Sublessee performs all of Sublessee's
obligations hereunder, said deposit, or so much thereof as has not theretofore
been applied by Sublessor, shall be returned, without payment of interest or
other increment for its use to Sublessee (or at Sublessor's option, to the last
assignee, if any, of Sublessee's interest hereunder) at the expiration of the
term hereof, and after Sublessee has vacated the Premises. No trust relationship
is created herein between Sublessor and Sublessee with respect to said Security
Deposit.

6. USE.
   6.1 USE.  The Premises shall be used and occupied only for Design, assembly 
and sales of computer components and for no other purpose.

   6.2 COMPLIANCE WITH LAW.
       (a) Sublessor warrants to Sublessee that the Premises, in its existing 
state, but without regard to the use for which Sublessee will use the Premises, 
does not violate any applicable building code regulation or ordinance at the 
time that this Sublease is executed. In the event that it is determined that 
this warranty has been violated, then it shall be the obligation of the 
Sublessor, after written notice from Sublessee, to promptly, at Sublessor's sole
cost and expense, rectify any such violation. In the event that Sublessee does 
not give to Sublessor written notice of the violation of this warranty within 
1 year from the commencement of the term of this Sublease, it shall be 
conclusively deemed that such violation did not exist and the correction of the 
same shall be the obligation of the Sublessee.

       (b) Except as provided in paragraph 6.2(a), Sublessee shall, at 
Sublessee's expense, comply promptly with all applicable statutes, ordinances, 
rules, regulations, orders, restrictions of record, and requirements in effect 
during the term or any part of the term hereof regulating the use by Sublessee 
of the Premises. Sublessee shall not use or permit the use of the Premises in 
any manner that will tend to create waste or a nuisance or, if there shall be 
more than one tenant of the building containing the Premises, which shall tend 
to disturb such other tenants.

   6.3 CONDITION OF PREMISES.  Except as provided in paragraph 6.2(a) Sublessee 
hereby accepts the Premises in their condition existing as of the date of the 
execution hereof, subject to all applicable zoning, municipal, county and state 
laws, ordinances, and regulations governing and regulating the use of the 
Premises, and accepts this Sublease subject thereto and to all matters disclosed
thereby and by any exhibits attached hereto. Sublessee acknowledges that neither
Sublessor nor Sublessor's agents have made any representation or warranty as to 
the suitability of the Premises for the conduct of Sublessee's business.

7. MASTER LEASE
   7.1 Sublessor is the lessee of the Premises by virtue of a lease, hereinafter
referred to as the "Master Lease", a copy of which is attached hereto marked 
Exhibit 1, dated 10-19, 1995 wherein Robert P. Peebles Trust, dated 4-11-79 is 
the lessor, hereinafter referred to as the "Master Lessor".

   7.2 This Sublease is and shall be at all times subject and subordinate to the
Master Lease.

   7.3 The terms, conditions and respective obligations of Sublessor and 
Sublessee to each other under this Sublease shall be the terms and conditions of
the Master Lease except for those provisions of the Master Lease which are 
directly contradicted by this Sublease in which event the terms of this Sublease
document shall control over the Master Lease. Therefore, for the purposes of 
this Sublease, wherever in the Master Lease the word "Lessor" is used it shall
be deemed to mean the Sublessor herein and wherever in the Master Lease the word
"Lessee" is used it shall be deemed to mean the Sublessee herein.

   7.4 During the term of this Sublease and for all periods subsequent for 
obligations which have arisen prior to the termination of this Sublease. 
Sublessee does hereby expressly assume and agree to perform and comply with, for
the benefit of Sublessor and Master Lessor, each and every obligation of 
Sublessor under the Master Lease except for the following paragraphs which are 
excluded therefrom: none.

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   7.5 The obligations that Sublessee has assumed under paragraph 7.4 hereof 
are hereinafter referred to as the "Sublessee's Assumed Obligations". The
obligations that Sublessee has not assumed under paragraph 7.4 hereof are
hereinafter referred to as the "Sublessor's Remaining Obligations".
   7.6 Sublease shall hold Sublessor free and harmless of and from all 
liability, judgments, costs, damages, claims or demands, including reasonable 
attorneys fees, arising out of Sublessee's failure to comply with or perform 
Sublessee's Assumed Obligations.
   7.7 Sublessor agrees to maintain the Master Lease during the entire term of 
this Sublease, subject, however, to any earlier termination of the Master Lease 
without the fault of the Sublessor, and to comply with or perform Sublessor's 
Remaining Obligations and to hold Sublessee free and harmless of and from all 
liability, judgments, costs, damages, claims or demands arising out of 
Sublessor's failure to comply with or perform Sublessor's Remaining Obligations.
   7.8 Sublessor represents to Sublessee that the Master Lease is in full force
and effect and that no default exists on the part of any party to the Master
Lease.

8. ASSIGNMENT OF SUBLEASE AND DEFAULT.

   8.1 Sublessor hereby assigns and transfers to Master Lessor the Sublessor's 
interest in this Sublease and all rentals and income arising therefrom, subject 
however to terms of Paragraph 8.2 hereof.
   8.2 Master Lessor, by executing this document, agrees the until a default 
shall occur in the performance of Sublessor's Obligations under the Master 
Lease, that Sublessor may receive, collect and enjoy the rents accruing under 
this Sublease. However, if Sublessor shall default in the performance of its 
obligations to Master Lessor then Master Lessor may, at its option, receive and 
collect, directly from Sublessee, all rent owing and to be owed under this 
Sublease. Master Lessor shall not, by reason of this assignment of the Sublease
nor by reason of the collection of the rents from the Sublessee, be deemed 
liable to Sublessee for any failure of the Sublessor to perform and comply with
Sublessor's Remaining Obligations.

   8.3 Sublessor hereby irrevocably authorizes and directs Sublessee, upon 
receipt of any written notice from the Master Lessor stating that a  default 
exists in the performance of Sublessor's obligations under the Master Lease, to 
pay to Master Lessor the rents due and to become due under the Sublease. 
Sublessor agrees that Sublessee shall have the right to rely upon any such 
statement and request form Master Lessor, and that Sublessee shall pay such 
rents to Master Lessor without any obligation or right to inquire as to whether
such default exists and notwithstanding any notice from or claim from Sublessor 
to the contrary and Sublessor shall have no right or claim against Sublessee for
any such rents so paid but Sublessee.
   8.4 No changes or modifications shall be made to this Sublease without the 
consent of Master Lessor.

9. CONSENT OF MASTER LESSOR.

   9.1 In the event that the Master Lease requires that Sublessor obtain the
consent of Master Lessor to any subletting by Sublessor then, this Sublease
shall not be effective unless, within 10 days of the date hereof, Master Lessor
signs this Sublease thereby giving its consent to this Subletting.
   9.2 In the event that the obligations of the Sublessor under the Master Lease
have been guaranteed by third parties then this Sublease, nor the Master
Lessor's consent, shall not be effective unless, within 10 days of the date
hereof, said guarantors sign this Sublease thereby giving guarantors consent to
this Sublease and the terms thereof.
   9.3 In the event that Master Lessor does give such consent then:
       (a) Such consent will not release Sublessor of its obligations or alter 
the primary liability of Sublessor to pay the rent and perform and comply with 
all of the obligations of Sublessor to be performed under the Master Lease.
       (b) the acceptance of rent by Master Lessor from Sublessee or any one 
else liable under the Master Lease shall not be deemed a waiver by Master 
Lessor of any provisions of the Master Lease.
       (c) The consent to this Sublease shall not constitute a consent to any 
subsequent subletting or assignment.
       (d) In the event of any default of Sublessor under the Master Lease, 
Master Lessor may proceed directly against Sublessor, any guarantors or any one 
else liable under the Master Lease or this Sublease without first exhausting 
Master Lessor's remedies against any other person on entity liable thereon to 
Master Lessor.
       (e) Master Lessor may consent to subsequent sublettings and assignments
of the Master Lease or this Sublease or any amendments or modifications thereto
without notifying Sublessor nor any one else liable under the Master Lease and
without obtaining their consent and such action shall not relieve such persons 
from liability.
       (f) In the event that Sublessor shall default in its obligations under
the Master Lease, then Master Lessor, at its option and without being obligated
to do so, may require Sublessee to attorn to Master Lessor in which event
Master Lessor shall undertake the obligations of Sublessor under the Sublease
from the time of the exercise of said option to termination of this Sublease but
Master Lessor shall not be liable for any prepaid rents nor any security deposit
paid by Sublessee, nor shall Master Lessor be liable for any other defaults of
the Sublessor under the Sublease.
   9.4 The signatures of the Master Lessor and any Guarantors of Sublessor at 
the end of this document shall constitute their consent to the terms of this 
Sublease.
   9.5 Master Lessor acknowledges that, to the best of Master Lessor's 
knowledge, no default presently exists under the Master Lease of obligations to 
be performed by Sublessor and that the Master Lease is in full force and effect.
   9.6 In the event the Sublessor defaults under its obligations to be performed
under the Master Lease by Sublessor, Master Lessor agrees to deliver to
Sublessee a copy of any such notice of default. Sublessee shall have the right
to cure any default of Sublessor described in any notice of default within ten
days after service of such notice to default on Sublessee. If such default is
cured by Sublessee then Sublessee shall have the right of reimbursement and
offset from and against Sublessor.


10. BROKERS FEE.

   10.1 Upon execution hereof by all parties, Sublessor shall pay to The Seeley
Company, a licensed real estate broker, (herein called "Broker"), a fee as set
forth in a separate agreement between Sublessor and Broker, or in the event
there is no separate agreement between Sublessor and Broker, the sum of
$1,156.35 for brokerage services rendered by Broker to Sublessor in this
transaction.
   10.2 Sublessor agrees that if Sublessee exercises any option or right of 
first refusal granted by Sublessor herein, or any option or right substantially 
similar thereto, either to extend the term of this Sublease, to renew this 
Sublease, to purchase the Premises, or to lease or purchase adjacent property 
which Sublessor may own or in which Sublessor has an interest, or if Broker is 
the procuring cause of any lease, sublease, or sale pertaining to the Premises
or any adjacent property which Sublessor may own or in which Sublessor has an
interest, then as to any of said transactions Sublessor shall pay to Broker a
fee, in cash, in accordance with the schedule of Broker in effect at the time of
the execution of this Sublease. Notwithstanding the foregoing, Sublessor's
obligation under this Paragraph 10.2 is limited to a transaction in which
Sublessor is acting as a sublessor, lessor or seller.
   10.3 Master Lessor agrees, by its consent to this Sublease, that if 
Sublessee shall exercise any option or right of first refusal granted to
Sublessee by Master Lessor in connection with this Sublease, or any option or
right substantially similar thereto, either to extend the Master Lease, to renew
the Master Lease, to purchase the Premises or any part thereof, or to lease or
purchase adjacent property which Master Lessor may own or in which Master Lessor
has an interest, or if Broker is the procuring cause of any other lease or sale
entered into between Sublessee and Master Lessor pertaining to the Premises, any
part thereof, or any adjacent property which Master Lessor owns or in which it
has an interest, then as to any of said transactions Master Lessor shall pay to
Broker a fee, in cash, in accordance with the schedule of Broker in effect at
the time of its consent to this Sublease.
   10.4 Any fee due from Sublessor or Master Lessor hereunder shall be due and 
payable upon the exercise of any option to extend or renew, as to any extension 
or renewal; upon the execution of any new lease, as to a new lease transaction 
or the exercise of a right of first refusal to lease; or at the close of escrow,
as to the exercise of any option to purchase or other sale transaction.
   10.5 Any transferee of Sublessor's interest in this Sublease, or of Master 
Lessor's interest in the Master Lease, by accepting an assignment thereof, 
shall be deemed to have assumed the respective obligations of Sublessor or 
Master Lessor under this Paragraph 10. Broker shall be deemed to be a 
third-party beneficiary of this paragraph 10.


11. ATTORNEY'S FEES. If any party or the Broker named herein brings an action to
enforce the terms hereof or to declare rights hereunder, the prevailing party in
any such action, on trial and appeal, shall be entitled to his reasonable
attorney's fees to be paid by the losing party as fixed by the Court. The
provision of this paragraph shall inure to the benefit of the Broker named
herein who seeks to enforce a right hereunder.

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12. ADDITIONAL PROVISIONS. [If there are no additional provisions draw a line 
from this point to the next printed word after the space left here. If there are
additional provisions place the same here.]

    a) Sublessor shall Paint all office and warehouse walls
    b) Clean restrooms, carpets and windows
    c) Deliver the premises clean, free of debris, and all mechanical,
       lighting, plumbing, HVAC, and doors shall be in good working order.
    d) The Sublessees hereunder are majority owners of a company they intend to
       sublease the premises to. By signing below, Sublessor and Master Lessor
       give consent to said sublease. The company is involved in the operations
       set forth under Paragraph 6 of this document. There will be no release
       from obligations of Sublessee hereunder.

IF THIS SUBLEASE HAS BEEN FILLED IN IT HAS BEEN PREPARED FOR SUBMISSION TO YOUR 
ATTORNEY FOR HIS APPROVAL. NO REPRESENTATION OR RECOMMENDATION IS MADE BY THE 
REAL ESTATE BROKER OR ITS AGENTS OR EMPLOYEES AS TO THE LEGAL SUFFICIENCY, LEGAL
EFFECT, OR TAX CONSEQUENCES OF THIS SUBLEASE OR THE TRANSACTION RELATING 
THERETO.

<TABLE> 
<S>                                        <C> 
Executed at______________________________  Javelin Systems, Inc., a Delaware Corporation

                 9-16-97                       /s/ RICHARD P. STACK
on_______________________________________  By____________________________________________
                                               Richard P. Stack, President
             1881 Langley Avenue              
address__________________________________ 
          Irvine, California 92164
_________________________________________          "Sublessor" (Corporate Seal)
                                                   D Howard Lewis & 
                                                   William R. Miller
Executed at______________________________  ______________________________________________

               Sept. 16, 1997                  /s/ D HOWARD LEWIS
on_______________________________________  by____________________________________________
                                               D Howard Lewis
            2882-C Walnut Avenue
address__________________________________      
          Tustin, California 92780             /s/ WILLIAM R. MILLER
_________________________________________  by____________________________________________
                                               William R. Miller
                   Tustin, CA
Executed at______________________________          "Sublessee" (Corporate Seal)
                                                   Robert P. Peebles Trust,
                     9/17/97                       dated 4-11-79
on_______________________________________  
                                               /s/ ROBERT P. PEEBLES (Trustee)
address__________________________________  by____________________________________________
                                               Robert P. Peebles
_________________________________________  by____________________________________________

                  St. Helena, CA                   "Master Lessor" (Corporate Seal)
Executed at______________________________  ______________________________________________

on_______________________________________  ______________________________________________

              1011 Greenfield Road         ______________________________________________
address__________________________________                  "Guarantors"
           St. Helena, CA 94574-9625
_________________________________________
</TABLE> 

NOTE: These forms are often modified to meet changing requirements of law and 
needs of the industry. Always write or call to make sure you are utilizing the 
most current form: AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION, 700 So. Flower 
St., Ste 600, Los Angeles, CA 90017.  (213) 687-8777.