Document:

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                                                                    Exhibit 10.7

                               SECURITY AGREEMENT

         SECURITY AGREEMENT, dated as of September 8, 2000, made by ENVISION
DEVELOPMENT CORP., a Delaware corporation (the "BORROWER"), in favor of Dominion
Income Management Corp. a Washington corporation (the "LENDER").

                                   WITNESSETH:

                  WHEREAS, the Lender has agreed to make loans and other
extensions of credit (such loans and other extensions of credit, collectively,
the "LOAN") to the Borrower from time to time upon the terms and subject to the
conditions set forth in the individual promissory notes (such promissory notes,
collectively, the "NOTE") issued by the Borrower to the Lender in connection
with the Loan; and

                  WHEREAS, the Lender has requested, as a condition precedent to
the making of the Loan, that the Borrower execute and deliver this Security
Agreement to the Lender, and the Borrower has agreed to this request;

         NOW, THEREFORE, in consideration of the premises and to induce the
Lender to make the Loan to the Borrower, the Borrower hereby agrees with the
Lender, as follows:

         1.  DEFINED TERMS.

                  1.1 DEFINITIONS. (a) The following terms which are defined in
the Code are used herein as so defined: Accounts, Certificated Security, Chattel
Paper, Documents, Equipment, Farm Products, Instruments, and Investment
Property.

                  (b) The following terms shall have the following meanings:

                  "AGREEMENT": this Security Agreement, as the same may be
amended, supplemented or otherwise modified from time to time.

                  "BUSINESS DAY": a day other than a Saturday, Sunday or other
day on which commercial banks are authorized or required by law to close.

                  "CODE": the Uniform Commercial Code as from time to time in
effect in the State of the Debtor's domicile.

                  "COLLATERAL": as defined in Section 2.

                  "COLLATERAL ACCOUNT": any collateral account established by
the Lender as provided in subsection 5.4 or subsection 8.2.

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                  "CONTRACTS": the contracts and agreements to which the
         Borrower is a party, as the same may be amended, supplemented or
         otherwise modified from time to time, including, without limitation,
         (a) all rights of the Borrower to receive moneys due and to become due
         to it thereunder or in connection therewith, (b) all rights of the
         Borrower to damages arising out of or for breach or default in respect
         thereof and (c) all rights of the Borrower to exercise all remedies
         thereunder, in each case to the extent the terms thereof (after giving
         effect to any consent that has been obtained, it being understood that
         the Borrower is not obligated to obtain any such consent) do not
         prohibit the grant by the Borrower of a security interest pursuant to
         this Agreement in its right, title and interest therein without the
         consent of any other party thereto and do not give any other party
         thereto the right to terminate its obligations thereunder.

                  "CONTRACTUAL OBLIGATION": as to any Person, any provision of
         any security issued by such Person or of any agreement, instrument or
         other undertaking to which such Person is a party or by which it or any
         of its property is bound.

                  "COPYRIGHTS": (i) all copyrights arising under the laws of the
         United States, any other country or any political subdivision thereof,
         whether registered or unregistered and whether published or unpublished
         all registrations and recordings thereof, and all applications in
         connection therewith, including, without limitation, all registrations,
         recordings and applications in the United States Copyright Office, and
         (ii) the right to obtain all renewals thereof.

                  "COPYRIGHT LICENSES": any written agreement naming the
         Borrower as licensor or licensee, granting any right under any
         Copyright, including, without limitation, the grant of rights to
         manufacture, distribute, exploit and sell materials derived from any
         Copyright.

                  "DEPOSIT ACCOUNT": as defined in the Uniform Commercial Code
         of any applicable jurisdiction and, in any event, including, without
         limitation, any demand, time, savings, passbook or like account
         maintained with a depositary institution.

                  "EVENT OF DEFAULT": as defined in the Note.

                  "GENERAL INTANGIBLES": all "general intangibles" as such term
         is defined in Section 9-106 of the Code and, in any event, including,
         without limitation, all contracts, agreements, instruments and
         indentures in any form, and portions thereof, to which the Borrower is
         a party or under which the Borrower has any right, title or interest or
         to which the Borrower or any property of the Borrower is subject, as
         the same may from time to time be amended, supplemented or otherwise
         modified, including, without limitation, (i) all rights of the Borrower
         to receive moneys due and to become due to it thereunder or in
         connection therewith, (ii) all rights of the Borrower to damages
         arising thereunder and (iii) all rights of the Borrower to perform and
         to exercise all remedies thereunder, in each case to the extent the

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         terms thereof (after giving effect to any consent that has been
         obtained, it being understood that the Borrower is not obligated to
         obtain any such consent) do not prohibit the grant by the Borrower of a
         security interest pursuant to this Agreement in its right, title and
         interest therein without the consent of any other party thereto and do
         not give any other party thereto the right to terminate its obligations
         thereunder; PROVIDED, that the foregoing limitation shall not affect,
         limit, restrict or impair the grant by the Borrower of a security
         interest pursuant to this Agreement in any Receivable or any money or
         other amounts due or to become due or other right to payment under any
         such contract, agreement, instrument or indenture.

                  "GOVERNMENTAL AUTHORITY": any nation or government, any state
         or other political subdivision thereof, any agency, authority,
         instrumentality, regulatory body, court, central bank or other entity
         exercising executive, legislative, judicial, taxing, regulatory or
         administrative functions of or pertaining to government, any securities
         exchange and any self-regulatory organization (including the National
         Association of Insurance Commissioners).

                  "INTELLECTUAL PROPERTY": the collective reference to all
         rights, priorities and privileges relating to intellectual property,
         whether arising under United States, multinational or foreign laws or
         otherwise, including, without limitation, the Copyrights, the Copyright
         Licenses, the Patents, the Patent Licenses, the Trademarks and the
         Trademark Licenses, and all rights to sue at law or in equity for any
         infringement or other impairment thereof, including the right to
         receive all proceeds and damages therefrom.

                  "LIEN": any mortgage, pledge, hypothecation, assignment,
         deposit arrangement, encumbrance, lien (statutory or other), charge or
         other security interest or any preference, priority or other security
         agreement or preferential arrangement of any kind or nature whatsoever
         (including any conditional sale or other title retention agreement and
         any capital lease having substantially the same economic effect as any
         of the foregoing).

                  "MATERIAL ADVERSE EFFECT": a material adverse effect on (a)
         the business, property, operations, condition (financial or otherwise)
         or prospects of the Borrower or (b) the validity or enforceability of
         the Note and this Agreement or the rights or remedies of the Lender
         thereunder or hereunder.

                  "OBLIGATION": the collective reference to the unpaid principal
         of and interest on the Loan and all other obligations and liabilities
         of the Borrower to the Lender, whether direct or indirect, absolute or
         contingent, due or to become due, or now existing or hereafter
         incurred, which may arise under, out of, or in connection with, the
         Note and this Agreement, in each case whether on account of principal,
         interest, fees, costs, expenses, reimbursement obligations or
         otherwise.

                  "PATENTS": (a) all letters patent of the United States, any
         other country or any political subdivision thereof, all reissues and
         extensions and all goodwill associated therewith, and (b)

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         all applications for letters patent of the United States or any other
         country and all divisions, continuations and continuations-in-part
         thereof, including, without limitation, and (c) all rights to obtain
         any reissues or extensions of the foregoing.

                  "PATENT LICENSE": all agreements, whether written or oral,
         providing for the grant by or to the Borrower of any right to
         manufacture, use or sell any invention covered in whole or in party by
         a Patent.

                  "PERSON": an individual, partnership, corporation, limited
         liability company, business trust, joint stock company, trust,
         unincorporated association, joint venture, Governmental Authority or
         other entity of whatever nature.

                  "PROCEEDS": all "proceeds" as such term is defined in Section
         9-306(1) of the Code.

                  "RECEIVABLE": any right to payment for goods sold or leased or
         for services rendered, whether or not such right is evidenced by an
         Instrument or Chattel Paper and whether or not it has been earned by
         performance (including, without limitation, any Account).

                  "REQUIREMENT OF LAW": as to any Person, the certificate of
         incorporation and by-laws or other organizational or governing
         documents of such Person, and any present or future law, treaty,
         statute, rule, regulation, common law or determination of an arbitrator
         or a court or other Governmental Authority and all official directives,
         consents, approvals, authorizations, guidelines, restrictions and
         policies of any Governmental Authority, in each case applicable to or
         binding upon such Person or any of its property or to which such Person
         or any of its property is subject.

                  "TRADEMARKS": (a) all trademarks, trade names, corporate
         names, company names, business names, fictitious business names, trade
         styles, service marks, logos and other source or business identifiers,
         and the goodwill associated therewith, now existing or hereafter
         adopted or acquired, all registrations and recordings thereof, and all
         applications in connection therewith, whether in the United States
         Patent and Trademark Office or in any similar office or agency of the
         United States, any State thereof or any other country or any political
         subdivision thereof, or otherwise, and all common-law rights related
         thereto, and (b) the right to obtain all renewals thereof.

                  "TRADEMARK LICENSE" means any agreement, written or oral,
         providing for the grant by or to the Borrower of any right to use any
         Trademark.

                  1.2 OTHER DEFINITIONAL PROVISIONS. (a) The words "hereof,"
"herein", "hereto" and "hereunder" and words of similar import when used in this
Agreement shall refer to this Agreement as a whole and not to any particular
provision of this Agreement, and Section, subsection and Schedule references are
to this Agreement unless otherwise specified.

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                  (b) The meanings given to terms defined herein shall be
equally applicable to both the singular and plural forms of such terms.

         2.  GRANT OF SECURITY INTEREST.

         2.1 As collateral security for the prompt and complete payment and
performance when due (whether at the stated maturity, by acceleration or
otherwise) of the Obligation, the Borrower hereby grants to the Lender a
security interest in all of the following property now owned or at any time
hereafter acquired by the Borrower or in which the Borrower now has or at any
time in the future may acquire any right, title or interest (collectively, the
"COLLATERAL"):

         (a)  all Accounts;

         (b)  all Chattel Paper;

         (c)  all Contracts;

         (d)  all Deposit Accounts;

         (e)  all Documents;

         (f)  all Equipment;

         (g)  all General Intangibles;

         (h)  all Instruments;

         (i)  all Intellectual Property;

         (j)  all Investment Property;

         (k)  all other property not otherwise described above;

         (l)  all books and records pertaining to the Collateral; and

         (m) to the extent not otherwise included, all Proceeds and products of
any and all of the foregoing and all collateral security and guarantees given by
any Person with respect to any of the foregoing.

         2.2 Notwithstanding the foregoing, the foregoing grant shall not apply
to any asset if a grant of a security interest in such asset would cause the
Borrower to be in breach of or default under any other agreement or
understanding previously entered into by Borrower.

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         3.  REPRESENTATIONS AND WARRANTIES.

         The Borrower hereby represents and warrants to the Lender that:

                  3.1 TITLE; OTHER LIENS. Some or all of the Collateral is
subject to and/or encumbered by the Liens and/or claims of others.

                  3.2 PERFECTED FIRST PRIORITY LIENS. The security interests
granted pursuant to this Agreement shall have such priority as they are entitled
to under the Code and shall be junior to all existing and validly perfected
Liens and/or encumbrances on the Collateral.

                  3.3 EQUIPMENT. On the date hereof, the Equipment (other than
mobile goods) is kept at the offices of the Borrower.

                  3.4 JURISDICTION OF ORGANIZATION; CHIEF EXECUTIVE OFFICE. On
the date hereof, the location of the Borrower's chief executive office and
principal place of business is located at 100 Nickerson Road, Marlboro, MA
01752.

                  3.5 FARM PRODUCTS. None of the Collateral constitutes, or is
the Proceeds of, Farm Products.

         4.  COVENANTS.

         The Borrower covenants and agrees with the Lender that from and after
the date of this Agreement until the Obligation shall have been paid in full,
and subject to the rights of the Borrower's senior Lien holders:

                  4.1 DELIVERY OF INSTRUMENTS, CERTIFICATED SECURITIES AND
CHATTEL PAPER. If any amount payable under or in connection with any of the
Collateral shall be or become evidenced by any Instrument, Certificated Security
or Chattel Paper, such Instrument, Certificated Security or Chattel Paper shall
be immediately delivered to the Lender, duly indorsed in a manner satisfactory
to the Lender, to be held as Collateral pursuant to this Agreement.

                  4.2 MAINTENANCE OF INSURANCE. The Borrower will maintain, with
financially sound and reputable companies, insurance policies in amounts and for
risks typical for companies comparable to the Borrower. The Borrower shall
deliver to the Lender a certificate of a reputable insurance broker with respect
to such insurance and such supplemental reports with respect thereto as the
Lender may from time to time reasonably request.

                  4.3 MAINTENANCE OF PERFECTED SECURITY INTEREST; FURTHER
DOCUMENTATION. (a) The Borrower shall maintain the security interests created by
this Agreement as perfected security interests

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having at least the priority described in subsection 3.2 and shall defend such
security interests against the claims and demands of all Persons whomsoever.

                  (b) The Borrower will furnish to the Lender from time to time
statements and schedules further identifying and describing the assets and
property of the Borrower and such other reports in connection therewith as the
Lender may reasonably request, all in reasonable detail.

                  (c) At any time and from time to time, upon the written
request of the Lender, and at the sole expense of the Borrower, the Borrower
will promptly and duly execute and deliver such further instruments and
documents and take such further actions as the Lender may reasonably request for
the purpose of obtaining or preserving the full benefits of this Agreement and
of the rights and powers herein granted, including, without limitation, (i)
filing any financing or continuation statements under the Uniform Commercial
Code (or other similar laws) in effect in any jurisdiction with respect to the
security interests created hereby and (ii) in the case of Deposit Accounts and
any other relevant collateral, taking any actions necessary to enable the Lender
to obtain "control" (within the meaning of the applicable Uniform Commercial
Code) with respect thereto.

                  4.4 CHANGES IN LOCATIONS, NAME, ETC. The Borrower shall not,
except upon 15 days' prior written notice to the Lender and delivery to the
Lender of (a) all additional executed financing statements and other documents
reasonably requested by the Lender to maintain the validity, perfection and
priority of the security interests provided for herein and (b) if applicable, a
written supplement to SCHEDULE 2 showing any additional location at which
Equipment shall be kept:

                  (a) permit any of the Equipment to be kept at a location other
than the offices of the Borrower, as they may from time to time be located; or

                  (b) change its jurisdiction of organization or the location of
its chief executive office or sole place of business from that referred to in
subsection 3.4; or

                  (c) change its name, identity or corporate or other
organizational structure to such an extent that any financing statement filed by
the Lender in connection with this Agreement would become misleading.

                  4.5 NOTICES. The Borrower will advise the Lender promptly, in
reasonable detail, at the Lender's address for notices set forth in Section 12
below of:

                  (a) any Lien (other than security interests created hereby) on
any of the Collateral; and

                  (b) of the occurrence of any other event which could
reasonably be expected to have a material adverse effect on the aggregate value
of the Collateral or on the security interests created hereby.

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                  4.6 PAYMENT OF OBLIGATIONS. The Borrower will pay and
discharge or otherwise satisfy at or before maturity or before they become
delinquent, as the case may be, all taxes, assessments and governmental charges
or levies imposed upon the Collateral or in respect of income or profits
therefrom, as well as all claims of any kind (including, without limitation,
claims for labor, materials and supplies) against or with respect to the
Collateral, except that no such charge need be paid if the amount or validity
thereof is currently being contested in good faith by appropriate proceedings,
reserves in conformity with generally accepted accounting principles with
respect thereto have been provided on the books of the Borrower and such
proceedings could not reasonably be expected to result in the sale, forfeiture
or loss of any material portion of the Collateral or any interest therein.

         5.  PROVISIONS RELATING TO RECEIVABLES.

                  5.1 BORROWER REMAINS LIABLE UNDER RECEIVABLES. Anything herein
to the contrary notwithstanding, the Borrower shall remain liable under each of
the Receivables to observe and perform all the conditions and obligations to be
observed and performed by it thereunder, all in accordance with the terms of any
agreement giving rise to each such Receivable. The Lender shall not have any
obligation or liability under any Receivable (or any agreement giving rise
thereto) by reason of or arising out of this Agreement or the receipt by the
Lender of any payment relating to such Receivable pursuant hereto, nor shall the
Lender be obligated in any manner to perform any of the obligations of the
Borrower under or pursuant to any Receivable (or any agreement giving rise
thereto), to make any payment, to make any inquiry as to the nature or the
sufficiency of any payment received by it or as to the sufficiency of any
performance by any party under any Receivable (or any agreement giving rise
thereto), to present or file any claim, to take any action to enforce any
performance or to collect the payment of any amounts which may have been
assigned to it or to which it may be entitled at any time or times.

                  5.2 COMMUNICATION WITH OBLIGORS. The Lender in its own name or
in the name of others may at any time after the occurrence and during the
continuance of an Event of Default communicate with obligors under the
Receivables and parties to the Contracts to verify with them to the Lender's
satisfaction the existence, amount and terms of any Receivables.

                  5.3 ANALYSIS OF RECEIVABLES. The Lender shall have the right
to make test verifications of the Receivables in any manner and through any
medium that it reasonably considers advisable, and the Borrower shall furnish
all such assistance and information as the Lender may require in connection with
such test verifications. At any time and from time to time, upon the Lender's
request and at the expense of the Borrower, the Borrower shall cause independent
public accountants or others satisfactory to the Lender to furnish to the Lender
reports showing reconciliations, aging and test verifications of, and trial
balances for, the Receivables.

                  5.4 COLLECTIONS ON RECEIVABLES. (a) The Lender hereby
authorizes the Borrower to collect the Receivables, subject to the Lender's
direction and control, and the Lender may curtail or

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terminate said authority at any time after the occurrence and during the
continuance of an Event of Default. If required by the Lender at any time after
the occurrence and during the continuance of an Event of Default, any payments
of Receivables, when collected by the Borrower, (i) shall be forthwith (and, in
any event, within two Business Days) deposited by the Borrower in the exact form
received, duly indorsed by the Borrower to the Lender if required, in a
Collateral Account maintained under the sole dominion and control of the Lender,
subject to withdrawal by the Lender only as provided in subsection 8.3, and (ii)
until so turned over, shall be held by the Borrower in trust for the Lender,
segregated from other funds of the Borrower.

                  (b) Each such deposit of Proceeds of Receivables shall be
accompanied by a report identifying in reasonable detail the nature and source
of the payments included in the deposit.

                  (c) At the Lender's request, the Borrower shall deliver to the
Lender all original and other documents evidencing, and relating to, the
agreements and transactions which gave rise to the Receivables, including,
without limitation, all original orders, invoices and shipping receipts.

                  5.5 COVENANTS. (a) Other than in the ordinary course of
business consistent with its past practice, the Borrower shall not (i) grant any
extension of the time of payment of any Receivable, (ii) compromise or settle
any Receivable for less than the full amount thereof, (iii) release, wholly or
partially, any Person liable for the payment of any Receivable, (iv) allow any
credit or discount whatsoever on any Receivable, or (v) amend, supplement or
modify any Receivable in any manner that could adversely affect the value
thereof.

                  (b) The Borrower will deliver to the Lender a copy of each
material demand, notice or document received by it that questions or calls into
doubt the validity or enforceability of more than 5% of the aggregate amount of
the then outstanding Receivables.

         6.  PROVISIONS RELATING TO CONTRACTS.

                  6.1 BORROWER REMAINS LIABLE UNDER CONTRACTS. Anything herein
to the contrary notwithstanding, the Borrower shall remain liable under each of
the Contracts to observe and perform all the conditions and obligations to be
observed and performed by it thereunder, all in accordance with and pursuant to
the terms and provisions of such Contract. The Lender shall not have any
obligation or liability under any Contract by reason of or arising out of this
Agreement or the receipt by the Lender of any payment relating to such Contract
pursuant hereto, nor shall the Lender be obligated in any manner to perform any
of the obligations of the Borrower under or pursuant to any Contract, to make
any payment, to make any inquiry as to the nature or the sufficiency of any
payment received by it or as to the sufficiency of any performance by any party
under any Contract, to present or file any claim, to take any action to enforce
any performance or to collect the payment of any amounts which may have been
assigned to it or to which it may be entitled at any time or times.

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                  6.2 COMMUNICATION WITH CONTRACTING PARTIES. The Lender in its
own name or in the name of others may communicate at any time after the
occurrence and during the continuance of an Event of Default with parties to the
Contracts to verify with them to the Lender's satisfaction the existence, amount
and terms of any Contracts.

                  6.3 REPRESENTATIONS AND WARRANTIES. (a) Each Contract is in
full force and effect and constitutes a valid and legally enforceable obligation
of the Borrower, and to the best of the Borrower's knowledge, of all other
parties thereto, subject to the effects of bankruptcy, insolvency, fraudulent
conveyance, reorganization, moratorium and other similar laws relating to or
affecting creditors' rights generally, general equitable principles (whether
considered in a proceeding in equity or at law) and an implied covenant of good
faith and fair dealing.

                  (b) So far as Borrower is aware, no consent or authorization
of, filing with or other act by or in respect of any Governmental Authority is
required in connection with the execution, delivery, performance, validity or
enforceability of any of the Contracts by any party thereto other than those
which have been duly obtained, made or performed, are in full force and effect
and do not subject the scope of any such Contract to any material adverse
limitation, either specific or general in nature.

                  (c) To the best of the Borrower's knowledge, neither the
Borrower nor any of the other parties to the Contracts is in default in the
performance or observance of any of the terms thereof.

                  (d) To the best of the Borrower's knowledge, the right, title
and interest of the Borrower in, to and under the Contracts are not subject to
any defenses, offsets, counterclaims or claims.

                  (e) None of the parties to any Contract is a Governmental
Authority.

                  6.4 COVENANTS. (a) The Borrower will perform and comply in all
material respects with all its obligations under the Contracts.

                  (b) Except in the ordinary course of its business, the
Borrower will not amend, modify, terminate or waive any provision of any
Contract in any manner which could reasonably be expected to materially
adversely affect the value of such Contract as Collateral.

                  (c) The Borrower will exercise promptly and diligently each
and every material right which it may have under each Contract (other than any
right of termination).

                  (d) The Borrower will deliver to the Lender a copy of each
material demand, notice or document received by it relating in any way to any
Contract that questions the validity or enforceability of such Contract.

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         7.  PROVISIONS RELATING TO INTELLECTUAL PROPERTY.

                  7.1 REPRESENTATIONS AND WARRANTIES. (a) On the date hereof,
all material Intellectual Property is valid, subsisting, unexpired, and
enforceable, has not been abandoned and does not infringe the intellectual
property rights of any other Person.

                  (b) No holding, decision or judgment has been rendered by any
Governmental Authority which would limit, cancel or question the validity of, or
the Borrower's rights in, any Intellectual Property in any respect that could
reasonably be expected to have a Material Adverse Effect.

                  (c) To the best of the Borrower's knowledge, no action or
proceeding is pending, or, to the knowledge of the Borrower, threatened, on the
date hereof (1) seeking to limit, cancel or question the validity of any
Intellectual Property or the Borrower's ownership interest therein, or (2)
which, if adversely determined, would have a material adverse effect on the
value of any Intellectual Property.

                  7.2 COVENANTS. (a) The Borrower (either itself or through
licensees) shall (i) continue to use each material Trademark on each and every
trademark class of goods applicable to its current line as reflected in its
current catalogs, brochures and price lists in order to maintain such Trademark
in full force free from any claim of abandonment for non-use, (ii) maintain as
in the past the quality of products and services offered under such Trademark,
(iii) use such Trademark with the appropriate notice of registration and all
other notices and legends required by applicable Requirements of Law, (iv) not
adopt or use any mark which is confusingly similar or a colorable imitation of
such Trademark unless the Lender shall obtain a perfected security interest in
such mark pursuant to this Agreement, and (v) not (and not permit any licensee
or sublicensee thereof to) do any act or knowingly omit to do any act whereby
such Trademark may become invalidated or impaired in any way.

                  (b) The Borrower (either itself or through licensees) shall
not do any act, or omit to do any act, whereby any material Patent may become
forfeited, abandoned or dedicated to the public.

                  (c) The Borrower (either itself or through licensees) (i)
shall employ each material Copyright and (ii) will not (and will not permit any
licensee or sublicensee thereof to) do any act or knowingly omit to do any act
whereby any material portion of the Copyrights may become invalidated or
otherwise impaired. The Borrower shall not (either itself or through licensees)
do any act whereby any material portion of the Copyrights may fall into the
public domain.

                  (d) The Borrower (either itself or through licensees) will not
do any act that knowingly uses any material Intellectual Property to infringe
the intellectual property rights of any other Person.

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                  (e) The Borrower will notify the Lender immediately if it
knows, or has reason to know, that any application or registration relating to
any material Intellectual Property may become forfeited, abandoned or dedicated
to the public, or of any adverse determination or development (including,
without limitation, the institution of, or any such determination or development
in, any proceeding in the United States Patent and Trademark Office, the United
States Copyright Office or any court or tribunal in any country) regarding the
Borrower's ownership of, or the validity of, any material Intellectual Property
or the Borrower's right to register the same or to own and maintain the same.

                  (f) Whenever the Borrower, either by itself or through any
agent, employee, licensee or designee, shall file an application for the
registration of any Intellectual Property with the United States Patent and
Trademark Office, the United States Copyright Office or any similar office or
agency in any other country or any political subdivision thereof, the Borrower
shall report such filing to the Lender within five Business Days after the last
day of the fiscal quarter in which such filing occurs. Upon request of the
Lender, the Borrower shall execute and deliver, and have recorded, any and all
agreements, instruments, documents, and papers as the Lender may request to
evidence the Lender's security interest in any Copyright, Patent or Trademark
and the goodwill and general intangibles of the Borrower relating thereto or
represented thereby.

                  (g) The Borrower will take all reasonable and necessary steps,
including, without limitation, in any proceeding before the United States Patent
and Trademark Office, the United States Copyright Office or any similar office
or agency in any other country or any political subdivision thereof, to maintain
and pursue each application (and to obtain the relevant registration) and to
maintain each registration of the material Intellectual Property, including,
without limitation, filing of applications for renewal, affidavits of use and
affidavits of incontestability.

                  (h) In the event that any material Intellectual Property is
infringed, misappropriated or diluted by a third party, the Borrower shall (i)
take such actions as the Borrower shall reasonably deem appropriate under the
circumstances to protect such Intellectual Property and (ii) if such
Intellectual Property is of material economic value, promptly notify the Lender
after it learns thereof and sue for infringement, misappropriation or dilution,
to seek injunctive relief where appropriate and to recover any and all damages
for such infringement, misappropriation or dilution.

         8.  REMEDIES.

                  8.1 NOTICE TO OBLIGORS AND CONTRACT PARTIES. Subject to the
rights of Borrower's senior Lien holders, upon the request of the Lender at any
time after the occurrence and during the continuance of an Event of Default, the
Borrower shall notify obligors on the Receivables and parties to the Contracts
that the Receivables and the Contracts have been assigned to the Lender and that
payments in respect thereof shall be made directly to the Lender.

PAGE 12
<PAGE>   13

                  8.2 PROCEEDS TO BE TURNED OVER TO LENDER. In addition to the
rights of the Lender specified in subsection 5.4 with respect to payments of
Receivables, if an Event of Default shall occur and be continuing, and in all
events subject to the rights of Borrower's senior Lien holders, all Proceeds
received by the Borrower consisting of cash, checks and other near-cash items
shall be held by the Borrower in trust for the Lender, segregated from other
funds of the Borrower, and shall, forthwith upon receipt by the Borrower, be
turned over to the Lender in the exact form received by the Borrower (duly
indorsed by the Borrower to the Lender, if required) and held by the Lender in a
Collateral Account maintained under the sole dominion and control of the Lender.
All Proceeds while held by the Lender in a Collateral Account (or by the
Borrower in trust for the Lender) shall continue to be held as collateral
security for all the Obligation and shall not constitute payment thereof until
applied as provided in subsection 8.3.

                  8.3 APPLICATION OF PROCEEDS. At such intervals as may be
agreed upon by the Borrower and the Lender, or, if an Event of Default shall
have occurred and be continuing, at any time at the Lender's election, the
Lender may apply all or any part of Proceeds held in any Collateral Account, in
payment of the Obligation in such order as the Lender may elect, and any part of
such funds which the Lender elects not so to apply and deems not required as
collateral security for the Obligation shall be paid over from time to time by
the Lender to the Borrower or to whomsoever may be lawfully entitled to receive
the same. Any balance of such Proceeds remaining after the Obligation shall have
been paid in full shall be paid over to the Borrower or to whomsoever may be
lawfully entitled to receive the same.

                  8.4 CODE AND OTHER REMEDIES. Subject to the rights of
Borrower's senior Lien holders, if an Event of Default shall occur and be
continuing, the Lender may exercise, in addition to all other rights and
remedies granted to it in this Agreement and in any other instrument or
agreement securing, evidencing or relating to the Obligation, all rights and
remedies of a secured party under the Code or any other applicable law. Without
limiting the generality of the foregoing, the Lender, without demand of
performance or other demand, presentment, protest, advertisement or notice of
any kind (except any notice required by law referred to below) to or upon the
Borrower or any other Person (all and each of which demands, defenses,
advertisements and notices are hereby waived), may in such circumstances
forthwith collect, receive, appropriate and realize upon the Collateral, or any
part thereof, and/or may forthwith sell, lease, assign, give option or options
to purchase, or otherwise dispose of and deliver the Collateral or any part
thereof (or contract to do any of the foregoing), in one or more parcels at
public or private sale or sales, at any exchange, broker's board or office of
the Lender or elsewhere upon such terms and conditions as it may deem advisable
and at such prices as it may deem best, for cash or on credit or for future
delivery without assumption of any credit risk. The Lender shall have the right
upon any such public sale or sales, and, to the extent permitted by law, upon
any such private sale or sales, to purchase the whole or any part of the
Collateral so sold, free of any right or equity of redemption in the Borrower,
which right or equity is hereby waived and released. The Borrower further
agrees, subject to the rights of the Borrower's senior Lien holders, at the
Lender's request, to assemble the Collateral and make it available to the Lender
at places which the Lender shall reasonably select, whether at the Borrower's
premises or elsewhere. The Lender

PAGE 13
<PAGE>   14

shall apply the net proceeds of any action taken by it pursuant to this Section
8.4, after deducting all reasonable costs and expenses of every kind incurred in
connection therewith or incidental to the care or safekeeping of any of the
Collateral or in any way relating to the Collateral or the rights of the Lender
hereunder, including, without limitation, reasonable attorneys' fees and
disbursements, to the payment in whole or in part of the Obligation, in such
order as the Lender may elect, and only after such application and after the
payment by the Lender of any other amount required by any provision of law,
including, without limitation, Section 9-504(1)(c) of the Code, need the Lender
account for the surplus, if any, to the Borrower. To the extent permitted by
applicable law, the Borrower waives all claims, damages and demands it may
acquire against the Lender arising out of the exercise by them of any rights
hereunder. If any notice of a proposed sale or other disposition of Collateral
shall be required by law, such notice shall be deemed reasonable and proper if
given at least 10 days before such sale or other disposition.

                  8.5 WAIVER; DEFICIENCY. To the extent permitted by law, the
Borrower waives and agrees not to assert any rights or privileges which it may
acquire under Section 9-112 of the Code. The Borrower shall remain liable for
any deficiency if the proceeds of any sale or other disposition of the
Collateral are insufficient to pay its Obligation and the fees and disbursements
of any attorneys employed by the Lender to collect such deficiency.

         9. LENDER'S APPOINTMENT AS ATTORNEY-IN-FACT; LENDER'S PERFORMANCE OF
BORROWER'S OBLIGATIONS.

                  9.1 POWERS. The Borrower, subject to the rights of the
Borrower's senior lien holders, hereby irrevocably constitutes and appoints the
Lender and any officer or agent thereof, with full power of substitution, as its
true and lawful attorney-in-fact with full irrevocable power and authority in
the place and stead of the Borrower and in the name of the Borrower or in its
own name, for the purpose of carrying out the terms of this Agreement, to take
any and all appropriate action and to execute any and all documents and
instruments which may be necessary or desirable to accomplish the purposes of
this Agreement, and, without limiting the generality of the foregoing, the
Borrower hereby gives the Lender the power and right, on behalf of the Borrower,
without notice to or assent by the Borrower, to do any or all of the following:

                  (a) in the name of the Borrower or its own name, or otherwise,
         take possession of and indorse and collect any checks, drafts, notes,
         acceptances or other instruments for the payment of moneys due under
         any Receivable or Contract or with respect to any other Collateral and
         file any claim or take any other action or proceeding in any court of
         law or equity or otherwise deemed appropriate by the Lender for the
         purpose of collecting any and all such moneys due under any Receivable
         or Contract or with respect to any other Collateral whenever payable;

                  (b) in the case of any Intellectual Property, execute and
         deliver, and have recorded, any and all agreements, instruments,
         documents and papers as the Lender may request to

PAGE 14
<PAGE>   15

         evidence the Lender's security interests in such Intellectual Property
         and the goodwill and general intangibles of the Borrower relating
         thereto or represented thereby;

                  (c) pay or discharge taxes and Liens levied or placed on or
         threatened against the Collateral, effect any repairs or any insurance
         called for by the terms of this Agreement and pay all or any part of
         the premiums therefor and the costs thereof;

                  (d) execute, in connection with any sale provided for in
         subsection 8.4, any indorsements, assignments or other instruments of
         conveyance or transfer with respect to the Collateral; and

                  (e) (1) direct any party liable for any payment under any of
         the Collateral to make payment of any and all moneys due or to become
         due thereunder directly to the Lender or as the Lender shall direct;
         (2) ask or demand for, collect, and receive payment of and receipt for,
         any and all moneys, claims and other amounts due or to become due at
         any time in respect of or arising out of any Collateral; (3) sign and
         indorse any invoices, freight or express bills, bills of lading,
         storage or warehouse receipts, drafts against debtors, assignments,
         verifications, notices and other documents in connection with any of
         the Collateral; (4) commence and prosecute any suits, actions or
         proceedings at law or in equity in any court of competent jurisdiction
         to collect the Collateral or any portion thereof and to enforce any
         other right in respect of any Collateral; (5) defend any suit, action
         or proceeding brought against the Borrower with respect to any
         Collateral; (6) settle, compromise or adjust any such suit, action or
         proceeding and, in connection therewith, give such discharges or
         releases as the Lender may deem appropriate; (7) assign any Copyright,
         Patent or Trademark (along with the goodwill of the business to which
         any such Copyright, Patent or Trademark pertains), throughout the world
         for such term or terms, on such conditions, and in such manner, as the
         Lender shall in its sole discretion determine; and (8) generally, sell,
         transfer, pledge and make any agreement with respect to or otherwise
         deal with any of the Collateral as fully and completely as though the
         Lender were the absolute owner thereof for all purposes, and do, at the
         Lender's option and the Borrower's expense, at any time, or from time
         to time, all acts and things which the Lender deems necessary to
         protect, preserve or realize upon the Collateral and the Lender's
         security interests therein and to effect the intent of this Agreement,
         all as fully and effectively as the Borrower might do.

         Anything in this subsection to the contrary notwithstanding, the Lender
agrees that it will not exercise any rights under the power of attorney provided
for in this subsection unless an Event of Default shall have occurred and be
continuing.

                  9.2 PERFORMANCE BY LENDER OF BORROWER'S OBLIGATIONS. If the
Borrower fails to perform or comply with any of its agreements contained herein,
the Lender, at its option, but without any obligation so to do, may perform or
comply, or otherwise cause performance or compliance, with such agreement.

PAGE 15
<PAGE>   16

                  9.3 BORROWER'S REIMBURSEMENT OBLIGATION. The expenses of the
Lender incurred in connection with actions undertaken as provided in this
Section 9, together with interest thereon at a rate per annum equal to the Prime
Rate (as defined in the Note) plus 200 basis points from the date of payment by
the Lender to the date reimbursed by the Borrower, shall be payable by the
Borrower to the Lender on demand.

                  9.4 RATIFICATION; POWER COUPLED WITH AN INTEREST. The Borrower
hereby ratifies all that said attorneys shall lawfully do or cause to be done by
virtue hereof. All powers, authorizations and agencies contained in this
Agreement are coupled with an interest and are irrevocable until this Agreement
is terminated and the security interests created hereby are released.

         10.  DUTY OF LENDER.

         The Lender's sole duty with respect to the custody, safekeeping and
physical preservation of the Collateral in its possession, under Section 9-207
of the Code or otherwise, shall be to deal with it in the same manner as the
Lender deals with similar property for its own account. Neither the Lender nor
any of its officers, directors, employees or agents shall be liable for failure
to demand, collect or realize upon any of the Collateral or for any delay in
doing so or shall be under any obligation to sell or otherwise dispose of any
Collateral upon the request of the Borrower or any other Person or to take any
other action whatsoever with regard to the Collateral or any part thereof. The
powers conferred on the Lender hereunder are solely to protect the Lender's
interests in the Collateral and shall not impose any duty upon the Lender to
exercise any such powers. The Lender shall be accountable only for amounts that
it actually received as a result of the exercise of such powers, and neither it
nor any of its officers, directors, employees or agents shall be responsible to
the Borrower for any act or failure to act hereunder, except for their own gross
negligence or willful misconduct.

         11.  EXECUTION OF FINANCING STATEMENTS.

         Pursuant to Section 9-402 of the Code and any other applicable law, the
Borrower authorizes the Lender to file or record financing statements and other
filing or recording documents or instruments with respect to the Collateral
without the signature of the Borrower in such form and in such offices as the
Lender determines appropriate to perfect the security interests of the Lender
under this Agreement. A photographic or other reproduction of this Agreement
shall be sufficient as a financing statement or other filing or recording
document or instrument for filing or recording in any jurisdiction.

         12.  NOTICES.

         All notices or other communications which are required or permitted
hereunder shall be in writing and sufficient if delivered personally or sent by
nationally recognized overnight courier or by registered or certified mail,
postage prepaid, return receipt requested, or by electronic mail, with a

PAGE 16
<PAGE>   17

copy thereof to be delivered or sent as provided above or by facsimile or
telecopier, as follows (or to such other address as the party to whom notice is
to be given may have furnished to the other party in writing in accordance
herewith):

                           (a)      If to the Lender:

                                    Dominion Income Management Corp.
                                    21520 30th Drive SE, Ste.
                                    Bothell, WA 98021

                           (b)      If to the Borrower:

                                    Envision Development Corp.
                                    100 Nickerson Road
                                    Marlboro, MA 01752
                                    Attention: Dean Willard

All such notices or communications shall be deemed to be received (i) in the
case of personal delivery, nationally recognized overnight courier or registered
or certified mail, on the date of such delivery and (ii) in the case of
facsimile or telecopier or electronic mail, upon confirmed receipt.

         13.  MISCELLANEOUS.

                  13.1 AMENDMENTS IN WRITING. None of the terms or provisions of
this Agreement may be waived, amended, supplemented or otherwise modified except
by a written instrument executed by the Borrower and the Lender, PROVIDED that
any provision of this Agreement imposing obligations on the Borrower may be
waived by the Lender in a written instrument executed by the Lender.

                  13.2 NO WAIVER BY COURSE OF CONDUCT. The Lender shall not by
any act (except by a written instrument pursuant to subsection 13.1), delay,
indulgence, omission or otherwise be deemed to have waived any right or remedy
hereunder or to have acquiesced in any default or Event of Default. No failure
to exercise, nor any delay in exercising, on the part of the Lender, any right,
power or privilege hereunder shall operate as a waiver thereof. No single or
partial exercise of any right, power or privilege hereunder shall preclude any
other or further exercise thereof or the exercise of any other right, power or
privilege. A waiver by the Lender of any right or remedy hereunder on any one
occasion shall not be construed as a bar to any right or remedy which the Lender
would otherwise have on any future occasion.

                  13.3 REMEDIES CUMULATIVE. The rights and remedies herein
provided are cumulative, may be exercised singly or concurrently and are not
exclusive of any other rights or remedies provided by law.

                  13.4 SET-OFF. The Borrower, subject to the rights of the
Borrower's senior Lien holders, hereby irrevocably authorizes the Lender at any
time and from time to time, without notice to the Borrower, any such notice
being expressly waived by the Borrower, to set-off and appropriate and

PAGE 17
<PAGE>   18

apply any and all deposits (general or special, time or demand, provisional or
final), in any currency, and any other credits, indebtedness or claims, in any
currency, in each case whether direct or indirect, absolute or contingent,
matured or unmatured, at any time held or owing by the Lender to or for the
credit or the account of the Borrower, or any part thereof in such amounts as
the Lender may elect, against and on account of the obligations and liabilities
of the Borrower to the Lender hereunder and claims of every nature and
description of the Lender against the Borrower, in any currency, whether arising
hereunder, under the Note, this Agreement or otherwise, as the Lender may elect,
whether or not the Lender has made any demand for payment and although such
obligations, liabilities and claims may be contingent or unmatured. The Lender
shall notify the Borrower promptly of any such set-off and the application made
by the Lender of the proceeds thereof, PROVIDED that the failure to give such
notice shall not affect the validity of such set-off and application. The rights
of the Lender under this Section 13.4 are in addition to other rights and
remedies (including, without limitation, other rights of set-off) which the
Lender may have.

                  13.5 SEVERABILITY. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

                  13.6 SECTION HEADINGS. The Section and subsection headings
used in this Agreement are for convenience of reference only and are not to
affect the construction hereof or be taken into consideration in the
interpretation hereof.

                  13.7 INTEGRATION. This Agreement and the Note represent the
agreement of the Borrower and the Lender with respect to the subject matter
hereof and thereof, and there are no promises, undertakings, representations or
warranties by the Lender relative to subject matter hereof and thereof not
expressly set forth or referred to herein or in the Note.

                  13.8 SUCCESSORS AND ASSIGNS. This Agreement shall be binding
upon the successors and assigns of the Borrower and shall inure to the benefit
of the Lender and its successors and assigns; PROVIDED that the Borrower may not
assign, transfer or delegate any of its rights or obligations under this
Agreement without the prior written consent of the Lender.

                  13.9 GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF
MASSACHUSETTS.

                  13.10 SUBMISSION TO JURISDICTION; WAIVERS. The Borrower hereby
irrevocably and unconditionally:

PAGE 18
<PAGE>   19

                  (a) submits for itself and its property in any legal action or
proceeding relating to this Agreement and the Note to which it is a party, or
for recognition and enforcement of any judgment in respect thereof, to the
non-exclusive general jurisdiction of the courts of the State of Massachusetts,
the courts of the United States of America in Massachusetts and appellate courts
from any thereof;

                  (b) consents that any such action or proceeding may be brought
in such courts and waives any objection that it may now or hereafter have to the
venue of any such action or proceeding in any such court or that such action or
proceeding was brought in an inconvenient court and agrees not to plead or claim
the same;

                  (c) agrees that service of process in any such action or
proceeding may be effected by mailing a copy thereof by registered or certified
mail (or any substantially similar form of mail), postage prepaid, to such
Grantor at its address referred to in Section 12 or at such other address of
which the Lender shall have been notified pursuant thereto;

                  (d) agrees that nothing herein shall affect the right to
effect service of process in any other manner permitted by law or shall limit
the right to sue in any other jurisdiction; and

                  (e) waives, to the maximum extent not prohibited by law, any
right it may have to claim or recover in any legal action or proceeding referred
to in this Section any special, exemplary, punitive or consequential damages.

                  13.11 ACKNOWLEDGEMENTS. The Borrower hereby acknowledges that:

                  (a) it has been advised by counsel in the negotiation,
execution and delivery of this Agreement and the Note to which it is a party;
(b) the Lender does not have any fiduciary relationship with or duty to the
Borrower arising out of or in connection with this Agreement or the Note, and
the relationship between the Borrower, on the one hand, and the Lender, on the
other hand, in connection herewith or therewith is solely that of debtor and
creditor; and

                  (c) no joint venture is created hereby or by the Note or
otherwise exists by virtue of the transactions contemplated hereby between the
Lender and the Borrower.

                  13.12 RELEASES. At such time as the Obligation shall have been
paid in full and the Note shall be cancelled, the Collateral shall be released
from the Liens created hereby, and this Agreement and all obligations (other
than those expressly stated to survive such termination) of the Lender and the
Borrower hereunder shall terminate, all without delivery of any instrument or
performance of any act by any party, and all rights to the Collateral shall
revert to the Borrower. At the request and sole expense of the Borrower
following any such termination, the Lender shall deliver to the Borrower any
Collateral held by the Lender hereunder, and promptly execute and deliver to the
Borrower such documents as the Borrower shall reasonably request to evidence
such termination.

PAGE 19
<PAGE>   20
         IN WITNESS WHEREOF, the undersigned has caused this Security Agreement
to be duly executed and delivered as of the date first above written.

                                            ENVISION DEVELOPMENT CORP.

                                            By: /s/ Michael Amideo
                                                --------------------------------
                                                 Name:  Michael Amideo
                                                 Title: Chief Executive Officer

PAGE 20<PAGE>   1
                                                                    Exhibit 10.8

                                 LOAN AGREEMENT
                             SECURED PROMISSORY NOTE

$650,000.00                                                   September 11, 2000

BORROWER:                  ENVISION DEVELOPMENT CORP.
                           100 Nickerson Road
                           Marlboro, MA 01752

LENDER:                    DOMINION INCOME MANAGEMENT CORP.
                           21520 30TH DRIVE S.E., STE. 105
                           BOTHELL, WA 98021

FOR VALUE RECEIVED, the undersigned Borrower, promises to pay UPON DEMAND, or if
no demand then on or before September 11, 2001, to Dominion Income Management
Corp., ("Lender"), or its assigns, in lawful money of the United States of
America, the principal sum of the Loan Amount, Six Hundred Fifty Thousand and
no/100 Dollars ($650,000.00), together with interest from the date of this Note
on the unpaid principal balance at a rate of the Prime Rate of interest plus 2%
per annum as reported from time to time in the Wall Street Journal, computed on
the basis of the actual number of days elapsed and a year of 365 days. The
entire unpaid principal and accrued interest thereon, if any, shall become
immediately due and payable on demand by the holder hereof. Unless demand is
earlier made, the entire unpaid balance of the Note including interest shall be
due September 11, 2001.

CONSIDERATION; ADVANCES, REPAYMENT AND DUE DATE. The consideration for this Note
is the loan of money, including advances made or to be made hereunder by the
Lender to the Borrower for business purposes in the amount of $650,000.

PREPAYMENT. This Note may be prepaid in whole or in part at any time without
premium or penalty. All prepayments shall be applied first to interest, then to
principal payments in the order of their maturity.

DEFAULT. The occurrence of any of the following shall constitute an "Event of
Default" under this Note:

(a)      Borrower shall fail to pay upon demand or when due any principal or
         interest hereunder; or

(b)      Borrower shall (i) apply for or consent to the appointment of a
         receiver, trustee, liquidator or custodian of itself or of all or a
         substantial part of its property, (ii) be unable, or admit in writing
         its inability, to pay its debts generally as they mature, (iii) make a
         general assignment for the benefit of its or any of its creditors, (iv)
         be dissolved or liquidated, (v) become insolvent (as such term may be
         defined or interpreted under any applicable statute), (vi) commence a
         voluntary case or other proceeding seeking liquidation, reorganization
         or other relief with respect to itself or its debts under any
         bankruptcy, insolvency or other similar law now or hereafter in effect
         or consent to any such relief or to the appointment of or taking
         possession of its property by any official in an involuntary case or
         other proceeding commenced against it, or (vii) take any action for the
         purpose of effecting any of the foregoing; or

(c)      Proceedings for the appointment of a receiver, trustee, liquidator or
         custodian of Borrower or of all or a substantial part of the property
         thereof, or an involuntary case or other proceedings seeking
         liquidation, reorganization or other relief with respect to or the
         debts thereof under any bankruptcy, insolvency or other similar law now
         or hereafter in effect shall be commenced and an order for relief
         entered or such proceeding shall not be dismissed or discharged within
         thirty (30) days of commencement.

PROMISSORY NOTE
Page 1 of 2

<PAGE>   2

(d)      Borrower shall have a period of (30) thirty days from an "Event of
         Default", as defined herein, to repay the entire balance outstanding
         and remedy such default.

COLLECTION, DEFAULT INTEREST, ATTORNEYS' FEES AND COSTS. If this Note shall be
in default, the balance due shall be accelerated without further notice, and
interest shall accrue thereon at the rate of 18% per annum until paid in full,
at such rate as not to exceed the rate permitted by the laws of the State of
Massachusetts. If this Note is placed in the hands of an attorney for
collection, whether or not suit shall be brought to collect any of the
principal, interest or deficiency of this Note, the Borrower promises to pay
reasonable attorneys' fees and all costs of collection. Borrower hereby waives
notice of default, presentment of demand for payment, protest or notice of
nonpayment or dishonor and all other notices or demands relative to this
instrument. All payments shall be made at 21520 30th Drive S.E. Bothell, WA
98021 or at such other place as the holder hereof may from time to time
designate in writing.

SECURITY. This Note and all undertakings hereunder, shall be secured by a
security agreement between Borrower and Lender dated September 8, 2000.

APPLICABLE LAW; JURISDICTION AND VENUE. This Note and all actions arising out of
or in connection with this Note shall be governed by and construed in accordance
with the laws of the State of Massachusetts. Any action under this Note may, at
Lender's option be brought in a court of competent jurisdiction in the State of
Massachusetts.

REPRESENTATIONS AND NOTICE TO BORROWER. Except as expressly set forth herein in
writing, the Lender makes no representations, promises or commitments to lend
money, to otherwise extend credit, to recover with respect to the repayment of
any debt or the exercise of any remedy, to modify or amend the terms under which
the Lender has lent money or otherwise extended credit, to release any guarantor
or cosigner, or to make any other financial accommodation pertaining to the debt
or other extension of credit. Borrower acknowledges that neither the Lender, nor
its agents or attorneys have made any such or other representations; and that
they will not rely on any representations except those stated in writing. The
terms of this Note may not be modified except in writing executed by both the
Lender and the Borrower.

IN WITNESS WHEREOF, Borrower has caused this Note to be executed, issued and
delivered as of the date first written above.

BORROWER:

ENVISION DEVELOPMENT CORPORATION

/s/ Michael Amideo
---------------------------------------
Michael Amideo, Chief Executive Officer

PROMISSORY NOTE
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