EXHIBIT 10.12

                          COMMERCIAL SECURITY AGREEMENT

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Borrower: Virtual Reality Laboratories, Inc.  Lender: Heller First Capital Corp.
          3534 Empleo A                       San Francisco Regional Office
          San Luis Obispo, CA 93401           650 California Street, 23rd Floor
                                              San Francisco, CA 94108-2604


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         THIS COMMERCIAL SECURITY AGREEMENT is entered into between VIRTUAL
REALITY LABORATORIES, INC. (referred to below as "Grantor"); and Heller First
Capital Corp. (referred to below as "Lender"). For valuable consideration,
Grantor grants to Lender a security interest in the Collateral to secure the
Indebtedness and agrees that Lender shall have the rights stated in this
Agreement with respect to the Collateral, in addition to all other rights which
Lender may have by law.

         DEFINITIONS. The following words shall have the following meanings when
used in this Agreement. Terms not otherwise defined in this Agreement shall have
the meanings attributed to such terms in the Uniform Commercial Code. All
references to dollar amounts shall mean amounts in lawful money of the United
States of America.

         Agreement. The word "Agreement" means this Commercial Security
Agreement, as this Commercial Security Agreement may be amended or modified from
time to time, together with all exhibits and schedules attached to this
Commercial Security Agreement from time to time.

         Collateral. The word "Collateral" means the following described
property of Grantor, whether now owned or hereafter acquired, whether now
existing or hereafter arising, and wherever located:

         ALL MACHINERY, EQUIPMENT, FURNITURE, FIXTURES, INVENTORY, ACCOUNTS, AND
GENERAL INTANGIBLES WHEREVER LOCATED AND MORE THOROUGHLY DESCRIBED ON EXHIBIT
"A" ATTACHED HERETO AND MADE A PART HEREOF.

         In addition, the word "Collateral" includes all the following, whether
now owned or hereafter acquired, whether now existing or hereafter arising, and
wherever located:

         (a)   All attachments, accessions, accessories, tools, parts, supplies,
               increases, and additions to and all replacements of and
               substitutions for any property described above.

         (b)   All products and produce of any of the property described in this
               Collateral section.

         (c)   All accounts, general intangibles, instruments, rents, monies,
               payments, and all other rights, arising out of a sale, lease, or
               other disposition of any of the property described in this
               Collateral section.







         (d)   All proceeds (including insurance proceeds) from the sale,
               destruction, loss, or other disposition of any of the property
               described in this Collateral section.

         (e)   All records and data relating to any of the property described in
               this Collateral section, whether in the form of a writing,
               photograph, microfilm, microfiche, or electronic media, together
               with all of Grantor's right, title, and interest in and to all
               computer software required to utilize, create, maintain, and
               process any such record or data on electronic media. The record
               owner of the real property is GERALD L. KNECHT.

         Event of Default. The words "Event of Default" mean and include without
limitation any of the Events of Default set forth below in the section titled
"Events of Default."

         Grantor. The word "Grantor means Virtual Reality Laboratories, Inc.,
its successors and assigns.

         Guarantor. The word "Guarantor" means and includes without limitation
each and all of the guarantors, sureties, and accommodation parties in
connection with the Indebtedness.

         Indebtedness. The word "Indebtedness" means the indebtedness evidenced
by the Note, including all principal and interest, together with all other
indebtedness and costs and expenses for which Grantor is responsible under this
Agreement or under any of the Related Documents.

         Lender. The word "Lender" means Heller First Capital Corp., its
successors and assigns.

         Note. The word "Note" means the note or credit agreement dated March
25, 1996, in the principal amount of $350,000.00 from VIRTUAL REALITY
LABORATORIES, INC. to Lender, together with all renewals of, extensions of,
modifications of, refinancings of, consolidations of and substitutions for the
note or credit agreement.

         Related Documents. The words "Related Documents" mean and include
without limitation all promissory notes, credit agreements, loan agreements,
environmental agreements, guaranties, security agreements, mortgages, deeds of
trust, and all other instruments, agreements and documents, whether now or
hereafter existing, executed in connection with the Indebtedness.

         OBLIGATIONS OF GRANTOR. Grantor warrants and covenants to Lender as
follows:

         Perfection of Security Interest. Grantor agrees to execute such
financing statements and to take whatever other actions are requested by Lender
to perfect and continue Lender's security interest in the Collateral. Upon
request of Lender, Grantor will deliver to Lender any and all of the documents
evidencing or constituting the Collateral, and Grantor will note Lender's
interest upon any and all chattel paper if not delivered to Lender for
possession by Lender. Grantor hereby appoints Lender as its irrevocable
attorney-in-fact for the purpose of executing any documents necessary to perfect
or to continue the security interest granted in this Agreement. Lender may at
any time, and without further authorization from Grantor, file a carbon,
photographic or other reproduction of any financing statement or of this
Agreement for use as a financing statement. Grantor will reimburse Lender for
all expenses for the perfection and the continuation of the perfection of
Lender's security interest in the Collateral. Grantor promptly will notify
Lender before any change in Grantor's name including any change to the assumed
business names of Grantor.








         No Violation. The execution and deliver of this Agreement will not
violate any law or agreement governing Grantor or to which Grantor is a party,
and its certificate or articles of incorporation and bylaws do not prohibit any
term or condition of this Agreement.

         Enforceability of Collateral. To the extent the Collateral consists of
accounts, chattel paper, or general intangibles, the Collateral is enforceable
in accordance with its terms, is genuine, and complies with applicable laws
concerning form, content and manner of preparation and execution, and all
persons appearing to be obligated on the Collateral have authority and capacity
to contract and are in fact obligated as they appear to be on the Collateral.

         Location of the Collateral. Grantor, upon the request of Lender, will
deliver to Lender in form satisfactory to Lender a schedule of real properties
and Collateral locations relating to Grantor's operations, including without
limitation the following: (a) all real property owned or being purchased by
Grantor; (b) all real property being rented or leased by Grantor; (c) all
storage facilities owned, rented, leased, or being used by Grantor; and (d) all
other properties where Collateral is or may be located. Except in the ordinary
course of its business, Grantor shall not remove the Collateral from its
existing locations without the prior written consent of Lender.

         Removal of Collateral. Grantor shall keep the Collateral (or to the
extent the Collateral consists of intangible property such as accounts, the
records concerning the Collateral) at Grantor's address shown above, or at such
other locations as are acceptable to Lender. Some or all of the Collateral may
be located at the real property described above. Except in the ordinary course
of its business, including the sales of inventory, Grantor shall not remove the
Collateral from its existing locations without the prior written consent of
Lender. To the extent that the Collateral consists of vehicles, or other titled
property, Grantor shall not take or permit any action which would require
application for certificates of title for the vehicles outside the State of
California, without the prior written consent of Lender.

         Transactions Involving Collateral. Except for inventory sold or
accounts collected in the ordinary course of Grantor's business, Grantor shall
not sell, offer to sell, or otherwise transfer or dispose of the Collateral.
While Grantor is not in default under this Agreement, Grantor may sell
inventory, but only in the ordinary course of its business and only to buyers
who qualify as a buyer in the ordinary course of business. A sale in the
ordinary course of Grantor's business does not include a transfer in partial or
total satisfaction of a debt or any bulk sale. Grantor shall not pledge,
mortgage, encumber or otherwise permit the Collateral to be subject to any lien,
security interest, encumbrance, or charge, other than the security interest
provided for in this Agreement, without the prior written consent of Lender.
This includes security interests even if junior in right to the security
interests granted under this Agreement. Unless waived by Lender, all proceeds
from any disposition of the Collateral (for whatever reason) shall be held in
trust for Lender and shall not be commingled with any other funds; provided,
however, this requirement shall not constitute consent by Lender to any sale or
other disposition. Upon receipt, Grantor shall immediately deliver any such 
proceeds to Lender.

         Title. Grantor represents and warrants to Lender that it holds good and
marketable title to the Collateral, free and clear of all liens and encumbrances
except for the lien of this Agreement. No financing statement covering any of
the Collateral is on file in any public office other than those which reflect
the security interest created by this Agreement or to which Lender has
specifically consented. Grantor shall defend Lender's rights in the Collateral
against the claims and demands of all other persons.







         Collateral Schedules and Locations. Insofar as the Collateral consists
of inventory, Grantor shall deliver to Lender, as often as Lender shall require,
such lists, descriptions, and designations of such Collateral as Lender may
require to identify the nature, extent, and location of such Collateral. Such
information shall be submitted for Grantor and each of its subsidiaries or
related companies.

         Maintenance and Inspection of Collateral. Grantor shall maintain all
tangible Collateral in good condition and repair. Grantor will not commit or
permit damage to or destruction of the Collateral or any part of the Collateral.
Lender and its designated representatives and agents shall have the right at all
reasonable times to examine, inspect, and audit the Collateral wherever located.
Grantor shall immediately notify Lender of all cases involving the return,
rejection, repossession, loss or damage of or to any Collateral; of any request
for credit or adjustment or of any other dispute arising with respect to the
Collateral; and generally of all happenings and events affecting the Collateral
or the value or the amount of the Collateral.

         Taxes, Assessments and Liens. Grantor will pay when due all taxes,
assessments and liens upon the Collateral, its use or operation, upon this
Agreement, upon any promissory note or notes evidencing the Indebtedness, or
upon any of the other Related Documents. Grantor may withhold any such payment
or may elect to contest any lien if Grantor is in good faith conducting an
appropriate proceeding to contest the obligation to pay and so long as Lender's
interest in the Collateral is not jeopardized in Lender's sole opinion. If the
Collateral is subjected to a lien which is not discharged within fifteen (15)
days, Grantor shall deposit with Lender cash, a sufficient corporate surety bond
or other security satisfactory to Lender in an amount adequate to provide for
the discharge of the lien plus any interest, costs or other charges that could
accrue as a result of foreclosure or sale of the Collateral. In any contest
Grantor shall defend itself and Lender and shall satisfy any final adverse
judgement before enforcement against the Collateral. Grantor shall name Lender
as an additional obligee under any surety bond furnished in the contest
proceedings.

         Compliance with Governmental Requirements. Grantor shall comply
promptly with all laws, ordinances, rules and regulations of all governmental
authorities, now or hereafter in effect, applicable to the ownership,
production, disposition, or use of the Collateral. Grantor may contest in good
faith any such law, ordinance or regulation and withhold compliance during any
proceeding, including appropriate appeals, so long as Lender's interest in the
Collateral, in Lender's opinion, is not jeopardized.

         Hazardous Substances. Grantor represents and warrants that the
Collateral never has been, and never will be so long as this Agreement remains a
lien on the Collateral, used for the generation, manufacture, storage,
transportation, treatment, disposal, release or threatened release of any
hazardous waste or substance, as those terms are defined in the Comprehensive
Environmental Response, Compensation, and Liability Act of 1980, as amended, 42
U.S.C. Section 9601, et seq. ("CERCLA"), the Superfund Amendments and
Reauthorization Act of 1986, Pub. L. No. 99-499 ("SARA"), the Hazardous
Materials Transportation Act, 49 U.S.C. Section 1801, et seq., the Resource
Conservation and Recovery Act, 42 U.S.C. Section 6901, et seq., Chapters 6.5
through 7.7 of Division 20 of the California Health and Safety Code, Section
25100, et seq., or other applicable state or Federal laws, rules, or regulations
adopted pursuant to any of the foregoing. The terms "hazardous waste" and
"hazardous substance" shall also include, without limitation, petroleum and
petroleum by-products or any fraction thereof and asbestos. The representations
and warranties contained herein are based on Grantor's due diligence in
investigating the Collateral for hazardous wastes and substances. Grantor hereby
(a) releases and waives any future claims against Lender for indemnity or
contribution in the event Grantor becomes liable for cleanup or other costs
under any such laws, and (b) agrees to indemnify and hold harmless Lender
against any and all claims and losses resulting from a breach of this provision
of this Agreement. This obligation to indemnify shall survive the payment of the
Indebtedness and the satisfaction of this Agreement.








         Maintenance of Casualty Insurance. Grantor shall procure and maintain
all risks insurance, including without limitation fire, theft and liability
coverage together with such other insurance as Lender may require with respect
to the Collateral, in form, amounts, coverages and basis reasonably acceptable
to Lender and issued by a company or companies reasonably acceptable to Lender.
Grantor, upon request of Lender, will deliver to Lender from time to time the
policies or certificates of insurance in form satisfactory to Lender, including
stipulations that coverages will not be canceled or diminished without at least
ten (10) days' prior written notice to Lender and not including any disclaimer
of the insurer's liability for failure to give such a notice. Each insurance
policy also shall include an endorsement providing that coverage in favor of
Lender will not be impaired in any way by any act, omission or default of
Grantor or any other person. In connection with all policies covering assets in
which Lender holders or is offered a security interest, Grantor will provide
Lender with such loss payable or other endorsements as Lender may require. If
Grantor at any time fails to obtain or maintain any insurance as required under
this Agreement, Lender may (but shall not be obligated to) obtain such insurance
as Lender deems appropriate, including if it so chooses "single interest
insurance," which will cover only Lender's interest in the Collateral.

         Application of Insurance Proceeds. Grantor shall promptly notify Lender
of any loss or damage to the Collateral. Lender may make proof of loss if
Grantor fails to do so within fifteen (15) days of the casualty. All proceeds of
any insurance on the Collateral, including accrued proceeds thereon, shall be
held by Lender as part of the Collateral. If Lender consents to repair or
replacement of the damaged or destroyed Collateral, Lender shall, upon
satisfactory proof of expenditure, pay or reimburse Grantor from the proceeds
for the reasonable cost of repair or restoration. If Lender does not consent to
repair or replacement of the Collateral, Lender shall retain a sufficient amount
of the proceeds to pay all of the Indebtedness, and shall pay the balance to
Grantor. Any proceeds which have not been disbursed within six (6) months after
their receipt and which Grantor has not committed to the repair or restoration
of the Collateral shall be used to prepay the Indebtedness.

         Insurance Reserves. Lender may require Grantor to maintain with Lender
reserves for payment of insurance premiums, which reserves shall be created by
monthly payments from Grantor of a sum estimated by Lender to be sufficient to
produce, at least fifteen (15) days before the premium due date, amounts at
least equal to the insurance premiums to be paid. If fifteen (15) days before
payment is due, the reserve funds are insufficient, Grantor shall upon demand
pay any deficiency to Lender. The reserve funds shall be held by Lender as a
general deposit and shall constitute a non-interest-bearing account which Lender
may satisfy by payment of the insurance premiums required to be paid by Grantor
as they become due. Lender does not hold the reserve funds in trust for Grantor,
and Lender is not the agent of Grantor for payment of the insurance premiums
required to be paid by Grantor. The responsibility for the payment of premiums
shall remain Grantor's sole responsibility.

         Insurance Reports. Grantor, upon the request of Lender, shall furnish
to Lender reports on each existing policy of insurance showing such information
as Lender may reasonably request including the following: (a) the name of the
insurer; (b) the risks insured; (c) the amount of the policy; (d) the property
insured; (e) the then current value on the basis of which insurance has been
obtained and the manner of determining that value; and (f) the expiration date
of the policy. In addition, Grantor shall upon request by Lender (however not
more often than annually) have an independent appraiser satisfactory to Lender
determine, as applicable, the cash value or replacement cost of the Collateral.

         GRANTOR'S RIGHT TO POSSESSION. Until default, Grantor may have
possession of the tangible personal property and beneficial use of all the
Collateral and may use it in any lawful manner not inconsistent with this
Agreement or the Related Documents, provided that Grantor's right to possession
and beneficial use shall not apply to any Collateral where possession of the
Collateral by Lender is required by law to perfect Lender's security interest in
such Collateral. If Lender at any time has possession of any Collateral, whether







before or after an Event of Default, Lender shall be deemed to have exercised
reasonable care in the custody and preservation of the Collateral if Lender
takes such action for that purpose as Grantor shall request or as Lender, in
Lender's sole discretion, shall deem appropriate under the circumstances, but
failure to honor any request by Grantor shall not of itself be deemed to be a
failure to exercise reasonable care. Lender shall not be required to take any
steps necessary to preserve any rights in the Collateral against prior parties,
nor to protect, preserve or maintain any security interest given to secure the
Indebtedness.

         EXPENDITURES BY LENDER. If not discharged or paid when due, Lender may
(but shall not be obligated to) discharge or pay any amount required to be
discharged or paid by Grantor under this Agreement, including without limitation
all taxes, liens, security interests, encumbrances, and other claims, at any
time levied or placed on the Collateral. Lender also may (but shall not be
obligated to) pay all costs for insuring, maintaining and preserving the
Collateral. All such expenditures incurred or paid by Lender for such purposes
will then bear interest at the rate charged under the Note from the date
incurred or paid by Lender to the date of repayment by Grantor. All such
expenses shall become a part of the Indebtedness and at Lender's option, will
(a) be payable on demand, (b) be added to the balance of the Note and be
apportioned among and be payable with any installment payments to become due
during either (i) the term of any applicable insurance policy or (ii) the
remaining term of the Note, or (c) be treated as a balloon payment which will be
due and payable at the Note's maturity. This Agreement also will secure payment
of these amounts. Such right shall be in addition to all other rights and
remedies to which Lender may be entitled upon the occurrence of an Event of
Default.

         EVENTS OF DEFAULT. Each of the following shall constitute an Event of
Default under this Agreement:

         Default on Indebtedness. Failure of Grantor to make any payment when
due on the Indebtedness.

         Other Defaults. Failure of Grantor to comply with or to perform any
other term, obligation, covenant or condition contained in this Agreement or in
any of the Related Documents or in any other agreement between Lender and
Grantor.

         False Statements. Any warranty, representation or statement made or
furnished to Lender by or on behalf of Grantor under this Agreement, the Note or
the Related Documents is false or misleading in any material respect, either now
or at the time made or furnished.

         Defective Collateralization. This Agreement or any of the Related
Documents ceases to be in full force and effect (including failure of any
collateral documents to create a valid and perfected security interest or lien)
at any time and for any reason.

         Insolvency. The dissolution or termination of Grantor's existence as a
going business, the insolvency of Grantor, the appointment of a receiver for any
part of Grantor's property, any assignment for the benefit of creditors, any
type of creditor workout, or the commencement of any proceeding under any
bankruptcy or insolvency laws by or against Grantor.

         Creditor or Forfeiture Proceedings. Commencement of foreclosure or
forfeiture proceedings, whether by judicial proceeding, self-help, repossession
or any other method, by any creditor of Grantor or by any governmental agency
against the Collateral or any other collateral securing the Indebtedness. This
includes a garnishment of any of Grantor's deposit accounts with Lender.









         Events Affecting Guarantor. Any of the preceding events occurs with
respect to any Guarantor of any of the Indebtedness or such Guarantor dies or
becomes incompetent.

         Adverse Change. A material adverse change occurs in Grantor's financial
condition, or Lender believes the prospect of payment or performance of the
Indebtedness is impaired.


         RIGHTS AND REMEDIES ON DEFAULT. If an Event of Default occurs under
this Agreement, at any time thereafter, Lender shall have all the rights of a
secured party under the California Uniform Commercial Code. In addition and
without limitation, Lender may exercise any one or more of the following rights
and remedies:

         Accelerate Indebtedness. Lender may declare the entire Indebtedness,
including any prepayment penalty which Grantor would be required to pay,
immediately due and payable, without notice.

         Assemble Collateral. Lender may require Grantor to deliver to Lender
all or any portion of the Collateral and any and all certificates of title and
other documents relating to the Collateral. Lender may require Grantor to
assemble the Collateral and make it available to Lender at a place to be
designated by Lender. Lender also shall have full power to enter upon the
property of Grantor to take possession of and remove the Collateral. If the
Collateral contains other goods not covered by this Agreement at the time of
repossession, Grantor agrees Lender may take such other goods, provided that
Lender makes reasonable efforts to return them to Grantor after repossession.

         Sell the Collateral. Lender shall have full power to sell, lease,
transfer, or otherwise deal with the Collateral or proceeds thereof in its own
name or that of Grantor. Lender may sell the Collateral at public auction or
private sale. Unless the Collateral threatens to decline speedily in value or is
of a type customarily sold on a recognized market, Lender will give Grantor
reasonable notice of the time after which any private sale or any other intended
disposition of the Collateral is to be made. The requirements of reasonable
notice shall be met if such notice is given at least ten (10) days, or such
lesser time as required by state law, before the time of the sale or
disposition. All expenses relating to the disposition of the Collateral,
including without limitation the expenses of retaking, holding, insuring,
preparing for sale and selling the Collateral, shall become a part of the
Indebtedness secured by this Agreement and shall be payable on demand, with
interest at the Note rate from date of expenditure until repaid.

         Appoint Receiver. To the extent permitted by applicable law, Lender
shall have the following rights and remedies regarding the appointment of a
receiver: (a) Lender may have a receiver appointed as a matter of right, (b) the
receiver may be an employee of Lender and may serve without bond, and (c) all
fees of the receiver shall become part of the Indebtedness secured by this
Agreement and shall be payable on demand, with interest at the Note rate from
date of expenditure until repaid.

         Collect Revenues, Apply Accounts. Lender, either itself or through a
receiver, may collect the payments, rents, income, and revenues from the
Collateral. Lender may at any time in its discretion transfer any Collateral
into its own name or that of its nominee and receive the payments, rents,
income, and revenues therefrom and hold the same as security for the
Indebtedness or apply it to payment of the Indebtedness in such order of
preference as Lender may determine. Insofar as the Collateral consists of
accounts, general intangibles, insurance policies, instruments, chattel paper,
choses in action, or similar property, Lender may demand, collect, receipt for,
settle, compromise, adjust, sue for, foreclose, or realize on the Collateral as
Lender may determine, whether or not Indebtedness or Collateral is then due. For
these purposes, Lender may, on behalf of and in the name of Grantor, receive,







open and dispose of mail addressed to Grantor; change any address to which mail
and payments are to be sent; and endorse notes, checks, drafts, money orders,
documents of title, instruments and items pertaining to payment, shipment, or
storage of any Collateral. To facilitate collection, Lender may notify account
debtors and obligors on any Collateral to make payments directly to Lender.

         Obtain Deficiency. If Lender chooses to sell any or all of the
Collateral, Lender may obtain a judgment against Grantor for any deficiency
remaining on the Indebtedness due to Lender after application of all amounts
received from the exercise of the rights provided in this Agreement. Grantor
shall be liable for a deficiency even if the transaction described in this
subsection is a sale of accounts or chattel paper.

         Other Rights and Remedies. Lender shall have all the rights and
remedies of a secured creditor under the provisions of the Uniform Commercial
Code, as may be amended from time to time. In addition, Lender shall have and
may exercise any or all other rights and remedies it may have available at law,
in equity, or otherwise.

         Cumulative Remedies. All of Lender's rights and remedies, whether
evidenced by this Agreement or the Related Documents or by any other writing,
shall be cumulative and may be exercised singularly or concurrently. Election by
Lender to pursue any remedy shall not exclude pursuit of any other remedy, and
an election to make expenditures or to take action to perform an obligation of
Grantor under this Agreement, after Grantor's failure to perform, shall not
affect Lender's right to declare a default and to exercise its remedies.

         MISCELLANEOUS PROVISIONS. The following miscellaneous provisions are a
part of this Agreement:

         Amendments. This Agreement, together with any Related Documents,
constitutes the entire understanding and agreement of the parties as to the
matters set forth in this Agreement. No alteration of or amendment to this
Agreement shall be effective unless given in writing and signed by the party or
parties sought to be charged or bound by the alteration or amendment.

         Applicable Law. This Agreement has been delivered to Lender and
accepted by Lender in the State of California. If there is a lawsuit, Grantor
agrees upon Lender's request to submit to the jurisdiction of the courts of San
Francisco County, State of California. This Agreement shall be governed by and
construed in accordance with the laws of the State of California.

         Caption Headings. Caption headings in this Agreement are for
convenience purposes only and are not to be used to interpret or define the
provisions of this Agreement.

         Multiple Parties; Corporate Authority. All obligations of Grantor under
this Agreement shall be joint and several, and all references to Grantor shall
mean each and every Grantor. This means that each of the Borrowers signing below
is responsible for all obligations in this Agreement.

         Notices. All notices required to be given under this Agreement shall be
given in writing, may be sent by telefacsimile, and shall be effective when
actually delivered or when deposited with a nationally recognized overnight
courier or deposited in the United States mail, first class, postage prepaid,
addressed to the party to whom the notice is to be given at the address shown
above. Any party may change its address for notices under this Agreement by
giving formal written notice to the other parties, specifying that the purpose
of the notice is to change the party's address. To the extent permitted by
applicable law, if there is more than one Grantor, notice to any Grantor will
constitute notice to all Grantors. For notice purposes, Grantor will keep Lender
informed at all times of Grantor's current address(es).







         Power of Attorney. Grantor hereby appoints Lender as its true
attorney-in-fact, irrevocably, with full power of substitution to do the
following: (a) to demand, collect, receive, receipt for, sue and recover all
sums of money or other property which may now or hereafter become due, owing or
payable from the Collateral; (b) to execute, sign and endorse any and all
claims, instruments, receipts, checks, drafts or warrants issued in payment for
the Collateral; (c) to settle or compromise any and all claims arising under the
Collateral, and, in the place and stead of Grantor, to execute and deliver its
release and settlement for the claim; and (d) to file any claim or claims or to
take any action or institute or take part in any proceedings, either in its own
name or in the name of Grantor, or otherwise, which in the discretion of Lender
may seem to be necessary or advisable. This power is given as security for the
Indebtedness, and the authority hereby conferred is and shall be irrevocable and
shall remain in full force and effect until renounced by Lender.

         Preference Payments. Any monies Lender pays because of an asserted
preference claim in Borrower's bankruptcy will become a part of the Indebtedness
and, at Lender's option, shall be payable by Borrower as provided above in the
"EXPENDITURES BY LENDER" paragraph.

         Severability. If a court of competent jurisdiction finds any provision
of this Agreement to be invalid or unenforceable as to any person or
circumstance, such finding shall not render that provision invalid or
unenforceable as to any other persons or circumstances. If feasible, any such
offending provision shall be deemed to be modified to be within the limits of
enforceability or validity; however, if the offending provision cannot be so
modified, it shall be stricken and all other provisions of this Agreement in all
other respects shall remain valid and enforceable.

         Successor Interests. Subject to the limitations set forth above on
transfer of the Collateral, this Agreement shall be binding upon and inure to
the benefit of the parties, their successors and assigns.

         Waiver. Lender shall not be deemed to have waived any rights under this
Agreement unless such waiver is given in writing and signed by Lender. No delay
or omission on the part of Lender in exercising any right shall operate as a
waiver of such right or any other right. A waiver by Lender of a provision of
this Agreement shall not prejudice or constitute a waiver of Lender's right
otherwise to demand strict compliance with that provision or any other provision
of this Agreement. No prior waiver by Lender, nor any course of dealing between
Lender and Grantor, shall constitute a waiver of any of Lender's rights or of
any of Grantor's obligations as to any future transactions. Whenever the consent
of Lender is required under this Agreement, the granting of such consent by
Lender in any instance shall not constitute continuing consent to subsequent
instances where such consent is required and in all cases such consent may be
granted or withheld in the sole discretoin of Lender.

         Waiver of Co-obligor's Rights. If more than one person is obligated for
the Indebtedness, Borrower irrevocably waives, disclaims and relinquishes all
claims against such other person which Borrower has or would otherwise have by
virtue of payment of the Indebtedness or any part thereof, specifically
including but not limited to all rights of indemnity, contribution or
exoneration.








         GRANTOR ACKNOWLEDGES HAVING READ ALL THE PROVISIONS OF THIS
COMMERCIAL SECURITY AGREEMENT, AND GRANTOR AGREES TO ITS TERMS.  THIS
AGREEMENT IS DATED MARCH 25, 1996.

GRANTOR:

VIRTUAL REALITY LABORATORIES, INC.

By:___________________________________   By:___________________________________
    Lance Hudson Woeltjen, President         Susan H. Woeltjen, Vice President






EXHIBIT "A"


         All present and future accounts, contract rights, chattel paper,
security agreements and debts secured thereby, documents, notes, drafts,
instruments, general intangibles (including, but not limited to tax refunds,
insurance refunds, intellectual property and franchises) and returned goods. All
present and hereafter acquired equipment, furniture, furnishings and wherever
located, including but not limited to machinery and machine tools with motors,
controls, attachments, parts, tools and accessories incidental thereto. All
present and future fixtures. All present and future tools, dies, drawings,
blueprints, catalogs and computer programs. All present and hereafter acquired
inventory wherever located, including but not limitd to raw materials, work in
process and finished goods. All proceeds and products of the foregoing,
including but not limitd to money, deposit accounts, goods, insurance proceeds,
and other tangible or intangible property received upon the sale or disposition
of the foregoing. All present and future patents, trademarks and trade names.
All present and future books and records pertaining to the foregoing and the
equipment containing said books and records.

         Except as to inventory held for sale, the debtor has no right to sell
or otherwise dispose of any of the Collateral.

         Including but not limited to the following: