Document:

<PAGE>

                                                                   EXHIBIT 10.12

                              SUBLEASE AGREEMENT

1.   PARTIES This Sublease is entered into as of the 13th day of July, 1997, by
and between Baugh Industrial Contractors, Inc., a Washington Corporation
("Sublessor"), and HealthKnowledge Corporation, a Washington Corporation
("Sublessee"), as a Sublease under the Lease (the "Lease") dated May 25, 1995,
entered into by Sublessor and Spieker Properties, L.P. ("Master Landlord"). A
copy of the Lease is attached hereto, marked Exhibit A, and incorporated herein
by reference.

2.   PROVISIONS CONSTITUTING SUBLEASE

2.1  Assumption of Obligations. This Sublease is subject to all of the terms and
     -------------------------
conditions of the Lease in Exhibit A, except for Sections 3(a), 32(a), 36 and
Exhibit C of the Lease which are specifically excluded and except as otherwise
specifically exempted herein. Subject to said limitations, Sublessee shall
assume and perform the obligations of Sublessor as Lessee in the Lease for the
benefit of Sublessor, and Sublessor shall assume and perform to the extent
possible the obligations of Master Landlord as Lessor in the Lease for the
benefit of Sublessee, to the extent said terms and conditions are applicable to
the Premises (defined below) subleased pursuant to this Sublease. Sublessee
shall be entitled to receive all of the rights and benefits reserved for the
Sublessor as Lessee under the Master Lease including use of the seven parking
spaces in the building garage.

2.2  Exceptions. Notwithstanding anything contained herein to the contrary, (i)
     ----------
Sublessee's duties and obligations hereunder apply only to acts and omissions
occurring during the term of this Sublease; (ii) Sublessee's duties and
obligations in regard to the condition of the Premises shall be performed based
on the condition of the Premises when the Premises are delivered to and accepted
by Sublessee hereunder and not on their condition upon the commencement of the
Lease; (iii) nothing contained in this Sublease shall affect the duties and
obligations of Sublessor under the Lease, and Sublessor shall continue to
perform all of its obligations under the Lease; and (iv) the exclusion of
Section 32(a) of the Lease from the terms of this Sublease shall not affect any
rights Sublessor may have under RCW 60.72.010.

2.3  Mutual Covenants. Neither Sublessor nor Sublessee shall commit or permit to
     ----------------
be committed on the Premises or otherwise any act or omission which shall
violate, or constitute breach of or default under any term or condition of the
Lease. Sublessor and Sublessee shall make their respective best efforts to cause
Master Landlord to perform all of its obligations under the Lease, and to keep
the Lease in full force and effect.

                                       1
<PAGE>

2.4  Lease Termination. In the event of the termination of Sublessor's interest
     -----------------
as Lessee under the Lease for any reason, then this Sublease shall terminate
coincidentally therewith without any liability of Sublessor to Sublessee, except
for any liability relating to Sublessor's breach of the terms of this Sublease,
if any.

2.5  Cooperation. Sublessor shall cooperate with Sublessee in regard to any
     -----------
efforts by Sublessee to obtain consents and approvals from Master Landlord which
may be required under the Lease.

3.   PREMISES

3.1  Description. Sublessor leases to Sublessee and Sublessee leases from
     -----------
Sublessor all of the premises leased from Master Landlord to Sublessor under the
Lease as described in the Lease and Exhibits B and E thereto (the "Premises")
situated in the City of Bellevue, County of King, State of Washington. The floor
plan of the Premises is attached hereto as Exhibit B and made a part hereof.

3.2  Condition. Prior to the commencement of the term of this Sublease,
     ---------
Sublessor shall cause the Premises to be in good condition and repair, and to
paint interior wails and woodwork (except for areas which Sublessee and
Sublessor mutually agree are not in need of fresh paint), to clean all carpets
(which may be completed on the date the Sublease term commences), to replace
damaged ceiling tiles, and to patch, sand and paint walls damaged by the removal
of cabinets and fixtures.

4.   TERM

4.1  Term. The term of this Sublease shall be for a period commencing on July
     ----
13, 1997, and ending on August 30, 2000, unless sooner terminated pursuant to
any provision hereof; provided, however, this Sublease shall not become
effective until and unless Master Landlord consents to the terms hereof by
signing below and Sublessor receives from Sublessee acceptable evidence that
Sublessee has obtained new private placement financing of not less than
$2,000,000.

4.2  Delay in Commencement. Notwithstanding the provisions of Section 4.1 above,
     ---------------------
if for any reason Sublessor cannot deliver possession of the Premises to
Sublessee on July 13, 1997, Sublessor shall not be subject to any liability
therefor, nor shall such failure affect the validity of this Sublease or the
obligations of Sublessee hereunder or extend the term hereof, but in such case
Sublessee shall not be obligated to pay rent until possession of the Premises is
tendered to Sublessee; provided, however, that (i) Sublessor shall use its best
efforts to deliver possession of the Premises to Sublessee on July 13, 1997; and
(ii) if Sublessor shall not have delivered possession of the Premises to
Sublessee on or before August 15, 1997, Sublessee may, at Sublessee's option, by
notice in writing to

                                       2
<PAGE>

Sublessor given on or before August 27, 1997, cancel this Sublease. If this
Lease is canceled as herein provided, Sublessor shall return any monies
previously deposited by Sublessee and the parties shall be discharged from all
obligations hereunder.

5.  RENT Sublessee shall pay to Sublessor as rent for the Premises equal monthly
installments of Twelve Thousand One Hundred Twenty Four and No/100 Dollars
($12,124.00), in advance, on the first day of each calendar month of the term
hereof. Sublessee shall pay Sublessor upon the full execution hereof by
Sublessee and Sublessor (and upon Master Landlord's written consent to this
Sublease in conformance with the substance of the consent form shown at the end
of this Sublease) the sum of Twelve Thousand One Hundred Twenty Four and No/100
Dollars ($12,124.00) as rent for August, 2000. Rent for any period during the
term hereof which is for less than one month shall be a pro rata portion of the
monthly installment. Rent shall be payable without notice or demand and without
any deduction, offset, or abatement in lawful money of the United States of
America to Sublessor at the address stated herein or to such other persons or at
such other places as Sublessor may designate in writing.

6.   SECURITY DEPOSIT

6.1  Amount and Purpose. Sublessee shall deposit with Sublessor upon the full
     ------------------
execution hereof by Sublessee, Sublessor and Master Landlord the sum of
Seventeen Thousand Seven Hundred Ninety and No/100 Dollars ($17,790.00) as
security for Sublessee's faithful performance of Sublessee's obligations
hereunder. If Sublessee fails to pay rent or other charges due hereunder, or
otherwise defaults with respect to any provision of this Sublease, Sublessor may
use, apply or retain all or any portion of said deposit for the payment of any
rent or other charge in default or for the payment of any other sum to which
Sublessor may become obligated by reason of Sublessee's default, or to
compensate Sublessor for any loss or damage which Sublessor may suffer thereby.
If Sublessor so uses or applies all or any portion of said deposit, Sublessee
shall within ten (10) days after written demand therefor deposit cash with
Sublessor in the amount sufficient to restore said deposit to the full amount
hereinabove stated (minus the amounts previously applied to rent as provided
below) and Sublessee's failure to do so shall be a breach of this Sublease, and
Sublessor may at its option terminate this Sublease.

6.2  Refund. Sublessor shall not be required to keep said deposit separate from
     ------
its general accounts. If there remains no uncured default of Sublessee hereunder
twelve (12) months after the commencement of the term of this Sublease, one-
third (1/3) of said deposit or so much thereof as had not theretofore been
applied by Sublessor shall be applied to the payment of the thirteenth (13th)
installment of the rent coming due hereunder; if there remains no uncured
default of Sublessee

                                       3
<PAGE>

hereunder twenty-four (24) months after the commencement of the term of this
Sublease, one-half ( 1/2) of the then remaining balance of the deposit shall be
applied to the payment of the twenty-fifth (25th) installment of rent coming due
hereunder; and if there remains no uncured default of Sublessee thereafter, all
of the then remaining balance of the deposit shall be refunded to Sublessee
within ten (10) days following the expiration of this Sublease.

7.   USE The Premises shall be used and occupied only for general office use.

8.   COMMISSION In accordance with the listing agreement dated March 13, 1997
between Sublessor and Leibsohn & Company ("Broker"), Sublessor shall remit a
brokerage commission to Broker upon Sublessee's occupancy of the Premises.

9.   MISCELLANEOUS

9.1  Notices. Any notice under this Sublease shall be deemed given if delivered
     -------
personally or sent by reputable courier service providing proof of delivery
(e.g., Federal Express, DHL, etc.), registered mail, postage prepaid, addressed
------
to the other party at the address set forth below or at such other address as
designated by the party by written notice, or by confirmed facsimile.

     SUBLESSOR           BAUGH INDUSTRIAL CONTRACTORS, INC.
                         900 Poplar Place South
                         Seattle, WA 98144
                         Attn: Alan Cornell
                         Fax: (206) 328-9235

     SUBLESSEE           HEALTHKNOWLEDGE CORPORATION
                         1300 114th Ave. S.E., Ste. 100
                         Bellevue, WA 98004
                         Attn: Chief Financial Officer
                         Fax:_______________________

9.2. Dispute Resolution. Any and all disputes arising between Sublessee and
     ------------------
Sublessor in connection with this Sublease shall be resolved in the following
order: (i) by good faith negotiation between the representatives of Sublessee
and Sublessor who have authority to fully and finally resolve the dispute; or
(ii) by litigation. In the event of any action to enforce or for breach of this
Sublease, the prevailing party shall be entitled to recover such sums as the
court may adjudge reasonable as attorneys' fees and litigation expenses,
including fees and expenses that may be incurred in any appellate proceeding.

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<PAGE>

9.3  Assignment. Notwithstanding Section 9 of the Lease to the contrary, a
     ----------
transfer by the present majority shareholders of Sublessee of ownership and
control of Sublessee's voting stock shall not be deemed an assignment for the
purposes of Section 9(a) of the Lease, and as incorporated herein, to the extent
such transfer results from a private placement.

EXECUTED as of the date first above written.

SUBLESSOR:

BAUGH INDUSTRIAL CONTRACTORS, INC.

Name: /s/ Curt C. Wagner
     ----------------------------
       Name: CURT C. WAGNER
            ---------------------
       Title: VICE PRESIDENT
             --------------------

SUBLESSEE:

HEALTHKNOWLEDGE CORPORATION

Name: /s/ Dennis Schmuland
     -----------------------------
        Name: Dennis Schmuland
             ---------------------
        Title: Chairman
              --------------------

List of Exhibits
----------------

Exhibit A:  Lease
Exhibit B:  Floor Plan

                                       5
<PAGE>

                                                                       EXHIBIT A
                            Basic Lease Information

                             Bellefield Office Park
                                  OFFICE LEASE
<TABLE>

<S>                  <C>                       <C>
                     Lease Date:                       May 25, 1995

                     Landlord                          Spieker Properties, L.P.,
                                                       a California limited partnership

                     Address of Landlord:              915 118/th/ Ave. S.E., Suite 110
                                                       Bellvue, WA  98004

                     Tenant:                           Baugh Industrial Contractors, Inc.
                                                       a Washington corporation

                     Address of Tenant:                1300 114/th/ Ave. S.E., Suite 100
                                                       Bellvue, WA  98004

                     Contact:                          E. Scott Dahlgreen

Paragraph 1          Premises:                 Approximately 7,461 rentable Square Feet located in Suite 100
                                               (formerly known as Suites 112, 113, 114, 116 & 118),
                                               Building "L". See Addendum.
                                                             ------------

                     Building:                 "Mercer Canal" Building "L": 1300 114/th/ Ave. SE, Bellevue WA

                     Project:                  that certain office park commonly known as Bellefield Office Park
                                               located in Bellevue, Washington on the Property containing 12
                                               office buildings, including the building, as it may be changed from
                                               time to time.

                     Property:                 The real property on which the building is located, as more fully
                                               and legally described on Exhibit E attached.

Paragraph 2          Lease Term:               The period commencing on September 1, 1995 and ending on the date
                                               ------------------------------------------               --------
                                               which is the last day of the sixtieth (60/th/) month following the
                                               ------------------------------------------------------------------
                                               Rent commencement Date.  SEE ADDENDUM
                                               -------------------------------------

Paragraph 3          Base Rent:                Months 1-36       $10,570,00/month
                                                                 ----------------
                                               Months 37-60      $11,503.00/month
                                                                 ----------------
                                               See Addendum
                                               -------------
</TABLE>

Paragraph 27         "Base Year" for Operating Cost: 1995
                                                     ----

                     "Fiscal Year" for Operating Costs: January 1 - December 31

Paragraph 27c        "Tenants Share" of Operating Costs: 2.4%
                                                         ----

Paragraph 32         Security Deposit: $0.00
                                       -----

The foregoing Basic Lease Information is hereby incorporated into and made a
part of this Lease. Each reference in this Lease to set forth Basic Lease
Information shall mean the respective information set forth above and shall be
construed to incorporate all of the terms provided under the particular Lease
paragraph pertaining to such information. If there is any conflict between any
Basic Lease information and the Lease, the Lease shall control

<TABLE>
<CAPTION>
LANDLORD:                                    TENANT:
<S>                                          <C>
Spiecker Properties                          Baugh Industrial Contractors, Inc.,
A California limited partnership             a Washington corporation
By:     Spiecker Properties L.P.,
        a California limited partnership
Its:    General Partner
By:     Spiecker Properties, Inc.
        a Maryland corporation
Its:    General Partner

   /s/ Donald S. Jefferson                     /s/
------------------------------               --------------------------------------
By: Donald S. Jefferson                      By:
Its: Senior Vice President                   Its: Baugh Industrial Contractors, Inc.
                                                  President
Date:                                        Date: 6/5/95
     --------------------------                   ---------------------------------
</TABLE><PAGE>

                                                                   EXHIBIT 10.13

                              Agreement of Lease
                              ------------------

This Agreement ("Lease"), dated as of the 1st day of February, 1998 is by and
between SIXTH & VIRGINIA PROPERTIES, a Washington General Partnership,
hereinafter called "Owner," and Medlynx, LLC a Washington Corporation,
hereinafter called "Tenant."

1    NONSTANDARD PROVISIONS

     The following constitute the nonstandard provisions of this Lease and are
     referred to elsewhere herein.

     a.   Floor of The Westin Building on which Premises are located:

          21/st/ Floor, Suite 2105

     b.   Agreed floor area of Premises:

          Approximately two hundred seven (207) square feet on the 21/st/ floor
          that includes an allowance for core and/or common areas used by
          Tenant.

     c.   The term of this Lease (hereafter "Lease Term") shall be One ( 1 )
          year and shall commence on the 1/st/ day of February, 1998 and end on
          the 31st day of January, 1999.

     d.   Monthly Base Rent:

          Seven Hundred Seventy Seven ($777) Dollars

     e.   Rent per day during any occupancy prior to commencement of Lease Term:

          n/a

     f.   Reimbursement to Owner for Special Improvements:

          Tenant, takes premises "as-is" and at Tenant's cost, Owner shall
          install and supply all improvements to the Premises. All such
          improvements shall be to building standard except as noted and shall
          be completed in accordance with drawings prepared at Tenant's cost, by
          Owner's staff end approved in advance by Owner and Tenant. Tenant
          shall reimburse Owner for all work within 10 days of receipt of an
          invoice.

     g.   Use permitted on Premises:

          Telecommunications switching facility and general office use

     h.   Tenant's address  for notices if other than Premises:

          P.O. Box 50230
          Bellevue, WA 98015

     i.   Tenant's billing address if other than Premises:

          same as above

     j.   Parking:

          During Lease Term, Owner shall provide Tenant with unreserved parking
          spaces including an appropriate pro-rata share of "carpool" stall for
          one (1) automobile in The Westin Building Garage. The space shall be
          made available during periods of typical office use from 7:00 a.m. to
          6:00 p.m. five days per week, Monday through Friday, and at other
          times for the persons to whom such spaces am regularly rented who wish
          to work in Building.

          Tenant shall pay in advance the charge established by Owner for said
          space, in addition to rent hereunder. If Tenant fails to timely pay
          such charges, Owner may by written notice to Tenant elect either to
          proceed as or provided in Article 14 or to cease to provide all or any
          number of the
<PAGE>

          be one hundred seventy dollars ($170) per month (including tax). From
          time to time during this Lease, the charge for such space shall be
          increased to the then-prevailing rate for similar service in the
          immediate area.

          Owner shall maintain the right to pass on to Tenant all applicable
          parking taxes.

     k.   Relocation of Premises:

          Owner shall have the right to relocate the Premises in Building on the
          following terms and conditions:

          1)   The floor area of the new location shall be approximately the
               same as the floor area of the original location;

          2)   Tenant will be reimbursed for all reasonable expenses incurred in
               connection with the relocation, including but not limited to the
               net cost of putting the new Premises in the same condition as the
               original location, moving, signage, telephone & computer
               equipment relocation and reasonable quantities of new stationery;

          3)   Owner shall give Tenant at least Ninety (90) days written notice
               of relocation.

     l.   Security Deposit:

          Concurrently with the execution of this Lease, Tenant shall deliver to
          Owner a sum equal to One Thousand Fifty Four Dollars ($1,554) this as
          security for the performance by Tenant of every covenant and condition
          of this Lease. Upon payment of deposit, Tenant shall request and Owner
          shall deliver to Tenant a written receipt therefor. Deposit may be
          commingled with other funds of Owner and shall bear no interest. If
          Tenant shall default with respect to any covenant or condition of this
          Lease, including but not limited to the payment of rent, Owner may
          apply the whole or any part of deposit to the payment of any sum in
          default or any other sum which Owner may be required to spend by
          reason of Tenant's default. Should Tenant comply with all of the
          covenants and conditions of this Lease, deposit shall be rammed to
          Tenant (or, at the option of Owner, to the last assignee of Tenant's
          interest in this Lease) at the expiration of the term hereof. Tenant
          shall not move into Premises until said deposit has been paid to
          Owner.

     m.   Signage:

          Owner will provide signage, according to building standards, to Tenant
          with Tenant's business name at Three (3) separate locations:

          1)   Main Lobby Directory - Sixth Avenue
          2)   Third Floor Lobby Directory- Skybridge entrance from Garage
          3)   Elevator Lobby Directory on Tenant's floor

     n.   Holding Over:

          If Tenant shall continue its occupancy of the Premises after the
          expiration of the Lease Term, the occupancy shall not be deemed to
          extend or renew the term of this Lease, and such occupancy shall
          constitute a tenancy from month to month, subject to all of the terms
          of this Lease, except the term, and except that the Rent for each
          month of continued occupancy shall be double the Rent for the last
          full month of the Lease Term. Tenant shall also be liable for Owner's
          incidental and consequential damages sustained by virtue of Tenant's
          holding over.

     o.   Square Footage Adjustment:

          Owner and Tenant agree that reasonable attempts have been made to
          determine the correct square footage used in this Lease. Owner grants
          Tenant the option to remeasure and challenge the new premises square
          footage calculation at Tenant's expense, If Tenant's square footage
          calculation differs from the number used in this Lease, Owner will
          remeasure at Owner's expense to determine which calculation is
          correct. Owner and Tenant agree that any challenge of the square
          footage calculation must be carried out within one month of the
          commencement date. After that time, Owner and Tenant agree to mutually
          waive any and all rights, claims, or liabilities against each other as
          it relates to the
<PAGE>

     p.   Meat-Me Boom Access

          Tenant shall have the right to share usage of the 19th floor Meet-Me
          Room and associated wiring system. Owner shall supervise the
          maintenance of the room by tenant-users and shall use all reasonable
          means to ensure this facility is always available to Tenant. Tenant
          agrees to abide by the regulations set jointly by Owners and tenant-
          users or, should its practices conflict with those regulations, to
          vacate immediately upon written request. As in Article 7, Owner shall
          not be liable for damages nor shall the rental herein be abated for
          failure to furnish or interruption in service in this facility.

          For Meet-Me Room usage, Tenant shall pay a one-time usage fee of Five
          Hundred Dollars ($500.00) no later than Thirty (30) days following
          Commencement Date, For each DSX panel or DS3 module placed in the
          room, Tenant shall pay a one-time fee of Three hundred sixty eight
          dollars ($368.00) per DSX and/or one hundred eighty four dollars
          ($184.00) per DS3 module and a recurring monthly charge of $50.00 per
          Panel installed within the room.

     q.   Cabling Right of Way

          Owner gives to Tenant the right of way to install cable from the
          Premises to the "Meet Me Room" on the 19th floor. Such installation is
          at Tenant's expense and subject to limitations and exclusions
          presented within Lease. Such installation must be coordinated with and
          approved by The Westin Building Engineer. Cabling to areas of the
          building other than the Meet-Me Room shall be governed by the same
          terms and conditions set forth above but shall additionally be subject
          to monthly recurring charges as established by Owner for all other
          cable run by users throughout the building.

     r.   HVAC (Heating, Ventilating, and Air Conditioning)

          Owner grants Tenant right to install at Tenant's sole cost, its own
          HVAC equipment in Premises. This equipment shall be considered
          Tenant's trade fixture. It shall be connected to the new building
          cooling tower loop in a manner approved by the Building Engineer. As
          in Article 7, Owner shall not be liable for damages nor shall the
          rental herein be abated for failure to furnish or interruption in
          service of this cooling tower and loop facility.

          Tenant shall pay Owner within ten (10) days of completion of the
          connection a one-time sum equal to Five hundred dollars ($500,00) per
          ton of connected load. In addition, Tenant shall pay upon invoice a
          quarterly fee which shall be its prorate, per too share of the costs
          charged to all participants of the cooling tower. This quarterly
          charge will include chemical treatment, electrical usage and water
          consumption.

     t.   Class "A " Entry

          Tenant acknowledges Owners requirement for the premises to have an
          entry that is compatible with the Class "A" image of the building.
          Tenant shall cooperate with Owner in developing an entry plan that
          meets Owner's need for appearance and Tenant's need for privacy and
          control.

2    EXHIBITS

     The following Drawings and Special Provisions are attached hereto as
     exhibits and made a part of this Lease:

          Exhibit A - Floor plan of the Westin Building, herein called
          "Building."
          Exhibit B - Site plan showing relation and location of Building and
          Westin Building Garage.
          Exhibit C - Details of Premises Approved by Owner and Tenant.

3    PREMISES

     Owner hereby leases to Tenant, and Tenant hereby leases of Owner, upon the
     terms and conditions herein set forth, those certain Premises, described in
     Article 1(a) and (b) and shown outlined in red on the standard floor plan
     attached hereto marked "Exhibit A" and made a part hereof in that certain
<PAGE>

     Building, known as the Westin Building situated in the City of Seattle,
     County of King, State of Washington, at Sixth Avenue and Virginia Street,
     and located on the following real property:

          Lots 11 and 12 (less portion for street), Block 15 of Addition to town
          of Seattle, as laid off by Heirs of Sarah A. Bell, deceased (commonly
          known as Heirs of Sarah A. Bell's Addition to the City of Seattle), as
          per plat recorded in Volume I of plats, page 103, records of King
          County, Washington.

     The areas so leased are hereinafter called "Premises."

4    RENT

     Tenant covenants and agrees to pay Owner the monthly rent which is set
     forth in Article 1(d) to be adjusted as provided elsewhere in this Lease,
     in United States currency in advance on or before the first day of each
     calendar month during said term, at the office of Owner in Building or at
     such other place as Owner may from time to time designate in writing. It is
     agreed that since collection of any amount past due imposes an
     administrative cost on Owner, in addition to all other sums that may be
     charged by Owner hereunder, Tenant shall pay to Owner a sum equal to Five
     Cents ($0.05) for every Dollar not paid when due.

5    USE

     Premises may be used only for the purpose set forth in Article 1(g) and for
     no other purpose or purposes without the written consent of Owner. No use
     shall be made of Premises, nor act done in or about Premises, which is
     unlawful, or which may increase the existing ram of insurance upon
     Building. Tenant shall not commit or allow to be committed any waste upon
     Premises, or any public or private nuisance or other act or thing which
     disturbs the quiet enjoyment of any other tenant in Building, nor shall
     Tenant, without the written consent of Owner, use any apparatus, machinery
     or device in or about Premises that shall cause any substantial noise or
     vibration. If any of Tenant's office machines and equipment should disturb
     the quiet enjoyment of any other tenant in Building, then Tenant shall
     provide adequate insulation or take such other action as may be necessary
     to eliminate the disturbance. Tenant shall observe such reasonable rules
     and regulations as may be adopted by Owner for the safety, care and
     cleanliness of Premises or Building and the preservation of good order
     therein.

6    POSSESSION

     In the event of Owner's inability to deliver possession of Premises ready
     for occupancy at the commencement of the Lease Term, Owner shall not be
     liable for any damage caused thereby, except as otherwise expressly stated
     herein, nor shall this Lease become void or voidable, nor shall the Lease
     Term be extended, but in such event, no rental shall be payable by Tenant
     to Owner for any portion of the Lease Term prior to actual delivery to
     Tenant of possession of Premises ready for occupancy by Tenant unless
     Tenant shall have failed to meat its obligations under Article 23 or unless
     the term of this Lease does not commence on or before March 15, 1998,
     without fault on the part of Tenant in which event Tenant's sole remedy
     shall be to cancel the Lease by giving thirty (30) days written notice of
     its said election to Owner. If Tenant, with Owner's permission enters into
     possession of Premises prior to commencement of the Lease Term, all of the
     terms and conditions of this Lease shall apply during such prior period,
     except that rental shall be the amount set forth in article 1(e) for each
     calendar day during such prior period.

7    SERVICES PROVIDED BY OWNER

     Owner shall, at its sole cost and expense, maintain Premises end the public
     and common areas of Building, such as lobbies, stairs, landscaping,
     corridors and restrooms, together with the Westin Building Garage, in
     reasonably good order and condition except for damage occasioned by the act
     of Tenant.

     Owner, at Tenant's sole cost, shall furnish Premises from 7:00 a.m. to 6:00
     p.m. Monday through Friday (exclusive of holidays), hereinafter called
     "Standard Work Weak," with electricity for lighting and the operating of
     office machines, heat and air conditioning as may be reasonably required
     for the occupation of Premises.

     Owner, at its sole cost shall provide elevator service, lighting
     replacement, toilet room supplies, window washing with reasonable
     frequency, and daily janitorial service on the basis of a Standard Work
     Week during the times and in the manner that such janitorial services are
     customarily furnished
<PAGE>

     reserved be abated, for failure to furnish or delay in furnishing any of
     the foregoing services, when such failure or delay is caused by accident or
     conditions beyond the control of Owner, or by labor disturbances or labor
     disputes of any character, or by inability to secure fuel, supplies,
     machinery, equipment or labor after reasonable efforts to do so, or by the
     making of improvements or necessary repairs to Premises or Building, nor
     shall the temporary failure to furnish any of such services be construed as
     an eviction of Tenant or relieve Tenant from the duty of observing and
     performing any of the provisions of this Lease.

     Tenant acknowledges that the 24-hour nature of its business exceeds the
     Standard Work Week described above. Owner may at its option and at Tenant's
     cost install a meter in the electrical system supplying Tenant, measure
     usage and bill Tenant monthly at the same rate, including demand charges,
     billed by Seattle City Light plus a monthly billing fee of $10.00.
     Additionally, Tenant shall pay for all other expanses incurred by Owner as
     a result of Tenant using Premises in excess of Standard Work Week.

8    REPAIRS AND ALTERATIONS

     Tenant agrees by taking possession of the Premises that Premises are then
     in a tenantable and good condition, that Tenant will take good care of
     Premises, and the same will not be altered or in any way changed without
     the written consent of Owner. Tenant hereby waives any right to make
     repairs at Owner's expense. Tenant shall not make changes to locks on doors
     or add, disturb, or in any way change any plumbing or wiring without first
     obtaining written consent of Owner. All damages or injury done to Premises
     by Tenant, or by any persons who may be in or upon Premises with the
     consent of Tenant, shall be paid for by Tenant and Tenant shall pay for all
     damages to Building caused by Tenant's misuse of Premises or the
     appurtenances thereto. All other repairs to Premises necessary to maintain
     Premises in a tenantable and good condition shall be done by or under the
     direction of Owner and at Owner's expense except as otherwise specifically
     provided herein. Tenant shall pay for the replacement of Special
     Improvements as provided in Article 23 and the replacement of doors or
     windows of Premises which are cracked or broken by Tenant, its employees,
     agents, or invitees, and Tenant shall not put any curtains, draperies or
     other hangings on or beside the windows in Premises without first obtaining
     Owner's consent Owner agrees that it will repaint the interior of Premises
     at least once every five years with a color mutually agreed upon between
     Tenant and Owner. Owner may make any alterations or improvements which
     Owner may deem necessary for the preservation, safety or improvement of
     Premises or Building. All alterations, additions and improvements, except
     trade fixtures installed by Tenant and which are removable without damage
     to Building, shall become the property of Owner. Tenant shall, at the
     termination of this Lease by the expiration of time or otherwise, surrender
     and deliver up Premises to Owner in as good condition as when received by
     Tenant from Owner, reasonable use and wear and damage by fire or other
     casualty excepted.

     Should Owner be required to make changes or additions to Building or Westin
     Building Garage at any time during the term of this Lease as a result of
     any law, rule, code or regulation which becomes effective after the
     Commencement Date, then Tenant shall pay on demand by Owner, as additional
     rent, a monthly charge equal to the area of Premises as stated in Article
     1(b) divided by 350,000 times 1 and 1/3 percent of the cost of the change
     or addition. Such additional rent shall commence upon substantial
     completion of each such change or addition and shall continue to the end of
     the term of this Lease.

9    ENTRY AND INSPECTION

     Tenant will permit Owner and its agents to enter into and upon Premises at
     all reasonable times for the purpose of inspecting the same or for the
     purpose of cleaning, repairing, altering or improving Premises or Building
     and when reasonably necessary may close entrances, doors, corridors,
     elevators or other facilities without liability to Tenant by reason of such
     closure and without such action by Owner being construed as an eviction of
     Tenant or relieving the Tenant from the duty of observing and performing
     any of the provisions of this Lease., Owner shall have the right to enter
     Premises for the purpose of showing Premises to prospective tenants for a
     period of 180 days prior to the expiration of the Lease Term.

10   DAMAGE OR DESTRUCTION

     If Premises or Building are damaged by fire, wind, or other such casualty,
     the damage shall be repaired by and at the expense of Owner, provided such
     repairs (to restore Premises to usable condition) can be made within sixty
     (60) days after the occurrence of such damage without the payment of
     overtime or other premiums, and until such repairs are completed, the rent
     shall be abated in proportion to the part
<PAGE>

     of Premises which is unusable by Tenant in the conduct of its business (but
     there shall be no abatement of rent by reason of any portion of Premises
     being unusable for a period equal to one day or less).

     If such repairs cannot be made within sixty (60) days, Owner may, at its
     option, make them within a reasonable time, and in such event this Lease
     shall continue in effect and the rent shall be abated in the manner
     provided above. Owner's election to make repairs must be evidenced by
     written notice to Tenant within thirty (30) days after the occurrence of
     the damage.

     If Owner does not elect to make such repairs that cannot be made within
     sixty (60) days, then either party may, by written notice to the other,
     terminate this Lease. A total destruction of Building shall automatically
     terminate this Lease.

11   ADVERTISING

     Tenant shall not inscribe any inscription, post, place, or in any manner
     display any sign, notice, picture, placard or poster, or any advertising
     matter whatsoever, anywhere in or about Premises or Building at places
     visible (either directly or indirectly as an outline or shadow on a glass
     pane) from any where outside Premises without first obtaining Owner's
     written consent thereto.

12   INDEMNITY, LOSS AND WAIVER OF SUBROGATION

     Tenant shall defend and indemnify Owner and save it harmless from and
     against any and all liability, damages, costs, or expenses, including
     attorneys' fees, arising from any ant, omission or negligence of Tenant or
     the officers, contractors, licensees, agents, servants, employees, guests,
     invitees, or visitors of Tenant in or about Building, or arising from any
     accident, injury, or damage, howsoever and by whomsoever caused, to any
     person or property, occurring in or about Premises, provided that the
     foregoing provision shall not be construed to make Tenant responsible for
     loss, damage, liability, or expense resulting from injuries to third
     parties caused by the negligence of Owner or of any officer, contractor,
     licensee, agent, servant, or employee of Owner. Owner shall not be
     responsible for providing security and Tenant hereby releases Owner from
     any claim for damage or loss of property that may arise as a result of
     vandalism or theft in Building or Westin Building Garage. Owner and Tenant
     each release the other from responsibility for, and waive their entire
     claim of recovery for (i) any loss or damage to the real or personal
     property of either located anywhere in Building and Westin Building Garage,
     arising out of or incident to the occurrence of any of the perils which may
     be covered by a fire and lightning insurance policy, with extended coverage
     endorsement in common use in the Seattle locality or (ii) loss resulting
     from business interruption at Premises or loss of rental income from
     Building,, arising out of or incident to the occurrence of any of the
     perils that may be covered by a business interruption insurance policy and
     by the loss of rental income insurance policy in common use in the Seattle
     locality. To the extent that such risks under (i) and (ii) are in fact
     coveted by insurance, each party shall cause its insurance carriers to
     consent to such waiver and to waive all rights of subrogation against the
     other party.

13   LIENS AND INSOLVENCY

     Tenant shall keep Premises and Building free from any liens or encumbrances
     arising out of any work performed by Tenant, materials furnished by Tenant,
     or obligations incurred by Tenant. Owner may terminate this Lease by giving
     Tenant notice of its election to do so, if: (i) Tenant files a voluntary
     petition in bankruptcy, or for reorganization under the bankruptcy laws, or
     is adjudged a bankrupt by a court of competent jurisdiction, (ii) if Tenant
     makes an assignment for the benefit of creditors, or if a receiver is
     appointed for Tenant's business, or (iii) any other action is taken by or
     against Tenant under any State or Federal insolvency or bankruptcy act. No
     interest in this Lease or estate hereby created in favor of Tenant shall
     pass by operation of law under any such bankruptcy or insolvency act to any
     person whomsoever without the prior express written consent of Owner. Any
     purported transfer in violation of this Article shall constitute a default
     by Tenant.

14   DEFAULT AND RE-ENTRY

     Except for a default under the preceding paragraph for which immediate
     right of termination is given to Owner, if Tenant falls to pay any
     installment of rent when due (plus interest on past due amounts at the
     maximum legal rate from the date due) after 3 days written notice, or to
     perform any other covenant under this Lease within thirty (30) days after
     written notice from Owner stating the nature of the default, Owner may re-
     enter and take possession of Premises using all reasonable force to do so;
     provided, however, that if the nature of such default other than for non-
     payment of rent is such that the same cannot reasonably be cured within
     such thirty-day period, Tenant shall not be deemed to be in default if
     Tenant shall within such period commence such cure and thereafter
     diligently prosecute the
<PAGE>

     same to completion. Notwithstanding such retaking of possession by Owner,
     Tenant's liability for the rent provided herein shall not be extinguished
     for the balance of the term of this Lease. Upon such re-entry, Owner may
     elect either (i) to terminate this Lease, in which event Tenant shall
     immediately pay to Owner a sum equal to that by which the then cash value
     of the total rent reserved under this Lease for the balance of the Lease
     Term exceeds the reasonable rental value of the Premises for the balance of
     the Lease Term plus costs incident to releasing the Premises including, but
     not limited to remodeling expenses, attorney's fees and real estate
     commissions; or (ii) without terminating this Lease, to relet all or any
     part of the Premises as the agent of and for the account of Tenant upon
     such terms and conditions as Owner may deem advisable, in which event the
     rents received on such reletting shall be applied first to the expenses of
     reletting and collection, including necessary renovation and alteration of
     Premises, reasonable attorney's fees and real estate commissions paid, and
     thereafter to payment of all sums due to or to become due Owner hereunder,
     and if a sufficient sum shall not be thus realized to pay such sums and
     other charges, Tenant shall pay Owner any deficiency monthly, and Owner may
     bring an action therefor as such monthly deficiency shall arise.

     In the event of any such retaking of possession of Premises by Owner as
     herein provided, Tenant shall remove all personal property located thereon
     and, upon failure to do so upon demand of Owner, Owner may, in addition to
     any other remedies allowed by law, remove and store the same in any such
     place selected by Owner, including but not limited to a public warehouse,
     at the expense and risk of Tenant. If Tenant shall fail to pay any sums due
     hereunder or the cost of storing any such property after it has been stored
     for a period of thirty (30) days or more, Owner may sell any or all of such
     property at public or private sale and shall apply the proceeds of such
     sale first, to the cost of such sale; second, to the payment of the charges
     for storage, if any; and third, to the payment of any other sums of money
     which may be due from Tenant to Owner under the terms of this Lease, and
     the balance, if any, to Tenant.

     Tenant hereby waives all claims for damages that may be caused by Owner's
     lawfully re-entering and taking possession of Premises or lawfully removing
     and storing or selling the property of Tenant as herein provided, and will
     save Owner harmless from loss, costs, or damages occasioned thereby, and
     such lawful re-entry shall not be considered or construed to be a forcible
     entry.

15   SURRENDER OF POSSESSION

     Upon expiration of the term of this Lease, whether by lapse of time or
     otherwise, Tenant shall promptly and peacefully surrender Premises to
     Owner.

16   COSTS AND ATTORNEYS' FEES

     If Tenant or Owner shall bring any action for any relief against the other,
     declaratory or otherwise, arising out of this Lease, including any suit by
     Owner for the recovery of rent or possession of Premises, the losing party
     shall pay the successful party a reasonable sum for attorneys' fees in such
     suit, and such attorneys' fees shall be deemed to have accrued on the
     commencement of such action.

17   NON-WAIVER

     Waiver by Owner of any breach of any term, covenant or condition herein
     contained shall not be deemed to be a waiver of such term, covenant, or
     condition, or of any subsequent breach of the same or any other term,
     covenant or condition herein contained. The subsequent acceptance of rent
     hereunder by Owner shall not be deemed to be a waiver of any preceding
     breach by Tenant of any term, covenant, or condition of this Lease, other
     than the failure of Tenant to pay the particular rental so accepted
     regardless of Owner's knowledge of such preceding breach at the time of
     acceptance of such rent.

18   ASSIGNMENT AND SUBLETTING

     Tenant shall not assign this Lease or sublet Premises or any part thereof
     without first obtaining Owner's written consent, which shall not be
     unreasonably withheld. No such assignment or subletting shall relieve
     Tenant of Tenant's liability under the Lease, except, if at the time of
     such assignment or subletting, Tenant establishes to the reasonable
     satisfaction of Owner that such assignee or sublessee is of satisfactory
     financial responsibility at least equal to that of Tenant at the time
     Tenant executed the Lease. Consent to any such assignment or subletting
     shall not operate as a waiver of the necessity for a consent to any
     subsequent assignment, and the terms of such consent shall be binding upon
     any person holding by, under or through Tenant. In no event shall a
     sublessee of Tenant sublet or assign any interest in this Lease.
<PAGE>

     In the event or an assignment or subletting that requires Owner's time
     and/or expense, Tenant shall reasonably compensate Owner for such expenses.

     If Tenant is a corporation, then any transfer of this Lease by merger,
     consolidation or liquidation or any change in the ownership of, or power to
     vote, the majority of its outstanding voting stock shall constitute an
     assignment for the purposes of this article.

19   SUCCESSORS

     All of the covenants, agreements, terms and conditions contained in this
     Lease shall apply to and be binding upon Owner and Tenant and their
     respective heirs, executors, administrators, successors and assigns.

20   TAX ON RENTAL

     If any governmental authority or unit under any present or future law
     effective at any time during the term of this Lease shall in any manner
     levy a tax on rentals payable under this Lease or on rentals accruing from
     use of Premises under this Lease, or a tax in any form against Owner
     because of or measured by income derived from the leasing or rental of
     Premises, the amount of the next succeeding month's rent following payment
     of such tax by Owner shall be increased by an amount equal to such tax paid
     by Owner, and for Tenant's default in paying the rent thus revised, Owner
     shall have the same remedies as upon failure to pay rent. Tenant shall not
     be liable to pay any amount because of income tax of a general nature
     applicable to Owner's various interests or sources of income. In the event
     that it shall not be lawful for Tenant to pay such tax, the rental payable
     to Owner under this Lease shall be revised to net Owner the same net rental
     after imposition of any such tax as would have been payable to Owner prior
     to the imposition of any such tax.

21   PRIORITY

     This Lease shall automatically be subordinate to any mortgage or deed of
     trust heretofore or hereafter placed upon Building, to any and all advances
     made or to be made thereunder, to the interest on the obligations secured
     thereby, and to all renewals, replacements and extensions thereof;
     provided, however, that in the event of foreclosure of any such mortgage or
     deed of trust or exercise of the power of sale thereunder, Tenant shall
     attorn to the purchaser of Building at such foreclosure or sale and
     recognize such purchaser as Owner under this Lease if so requested by such
     purchaser. If any mortgagee or beneficiary elects to have this Lease
     superior to its mortgage or deed of trust and gives notice of its election
     to Tenant, then this Lease shall thereupon become superior to the lien of
     such mortgage or deed of trust, whether this Lease is dated or recorded
     before or after the mortgage or deed of trust. Within fifteen days of
     presentation, Tenant shall execute, acknowledge, and deliver to Owner (i)
     any subordination or nondisturbance agreement or other instrument that
     Owner may require to carry out the provisions of this article, and (ii) any
     estoppel certificate requested by Owner from time to time in the standard
     form of any such mortgagee or beneficiary certifying in writing, if such be
     true, that Tenant shall be in occupancy, that this Lease is unmodified and
     in full force and effect (or if there have been modifications, that the
     same is in full force and effect as modified and stating the modifications)
     and the dates to which the rent and other charges shall have been paid, and
     that there shall be no rental offsets or claims.

22   CONDEMNATION

     If the whole of Premises, or if such portion of either Premises or the
     facilities in Building as may be required for the reasonable use of
     Premises, shall be taken by virtue of any condemnation or notice of
     condemnation or eminent domain proceeding, or by purchase in lieu thereof,
     or for public or quasipublic use, directly or indirectly, this Lease shall
     automatically terminate as of the date of such condemnation, or purchase in
     lieu of condemnation, or as of the date possession is taken by the
     condemning authority, whichever is earlier. Current rent shall be
     apportioned as of the date of such termination. In case of a taking of a
     part of Premises or a portion of the facilities in Building not required
     for the reasonable use of Premises, then this Lease shall continue in full
     force and effect and the rental shall be equitably reduced based on the
     proportion by which the rentable area of Premises is reduced, such rent
     reduction to be effective on the date of such partial taking. No award of
     any partial or entire taking shall be apportioned, and Tenant hereby
     assigns to Owner any award which may be made in such taking or condemnation
     together with any and all rights of Tenant now or hereafter arising in or
     to the same or any part thereof, provided, however, that nothing herein
     shall be deemed to give Owner any interest in, or to require Tenant to
     assign to Owner, any award made to Tenant for the taking of personal
     property or fixtures belonging to Tenant, for the interruption of or
     damages to
<PAGE>

23   SPECIAL IMPROVEMENTS

     The term "Special Improvements" as used in this Lease refers to all
     improvements to Premises, whether provided at the expense of Owner or
     Tenant, other than acoustical ceilings, lighting fixtures, air conditioning
     grilles, air ducts and temperature controls, draperies, corridor and
     demising partitions, and concrete floor ready for pad and carpet. Tenant
     shall reimburse Owner for Owner's necessary expense of repairing or
     replacing all Special Improvements to maintain Special Improvements in
     first-class condition. Before occupancy of Premises, Tenant shall pay Owner
     that certain sum set forth in Article 1(f) as payment for certain of
     Special Improvements made to Premises. In addition, Tenant shall pay Owner
     for installation of all Special improvements if they have been installed by
     Owner pursuant to Tenant's request. Where Special Improvements are to be
     installed by Owner, Tenant shall give Owner written notice of its final
     color selections and all other details of its office layout in sufficient
     time to permit Owner's completion of all work by the commencement date
     hereunder using its normal crews on a regular time basis, and such notice
     shall in any event be given not later than fifteen working days before such
     commencement date.

24   REAL PROPERTY TAXES

     Owner shall pay all real property taxes and assessments that may be levied
     against Building and the underlying land. If the amount of such real
     property taxes and assessments shall, in any calendar year during the Lease
     Term, exceed the amount of real property taxes and assessments payable for
     the calendar year 1997, then on the tax payment dates in 1998 and on these
     dates of each succeeding year, Tenant shall reimburse Owner for Tenant's
     proportionate share of such increase based upon the ratio which area of
     Premises, as set forth in Article 1(b), bears to 350,000 square feet. Owner
     shell submit to Tenant. if so requested by Tenant, a copy of the real
     property tax statement for the year in which payment is requested.

     The foregoing charges constitute additional rent that shall be deemed to
     have accrued uniformly during the calendar year in which payment is due.
     The final payment under the provision of this Article shall be prorated
     based on reasonable projections of the increase through the termination of
     this Lease and shall be due thirty days before such termination.

25   ANNUAL RENT ADJUSTMENT

     To partially compensate for the effect of inflation, a portion of the
     rental rate (viz. $ 7.50 per square foot per year) shall be adjusted
     annually to reflect reductions, if any, in the purchasing power of the
     dollar. Three separate generic elements of cost (namely: labor, materials
     and energy) shall be deemed to be representative of all operational costs.
     Indices for measuring changes in the dollar value for each of these cost
     elements shall be: janitorial hourly labor rate, Consumer Price Index, and
     the average cost per kilowatt-hour of electricity (including without
     limitation all demand charges), respectively. Changes in each of these
     shall adjust rent as provided below:

                      Generic                               Element's Cost
                  Element of Cost           Index                Share
                  ---------------           -----                -----
                    1. Labor           Janitorial rate           $3.00
                    2. Material        C.P.I.                    $3.00
                    3. Energy          Average k Wh cost         $1.50

     The base index for each of these indices shall be established from data for
     the month of September of the year preceding the year in which this Lease
     commences. Indices for each succeeding year shall be calculated annually
     using September experience data, and the ratio that these annual indices
     bear to their respective base index shall be reduced by 1.00 then
     multiplied by the individual element's cost share as specified in Items 1,
     2 and 3 above, and by the area of Premises as set forth in Article l(b).
     Each January 1, following the calendar year in which the Lease becomes
     effective, the Monthly Rent in Article 1(d) shall be increased by one-
     twelfth (1/12) of the sum of the amounts so determined. No changes in the
     rent as specified above shall take place during the calendar year in which
     the Lease Term commences.

     The janitorial hourly labor rate shall be that as established by the
     Building Services Employees International Union Local No. 6 for journeymen
     including all applicable taxes and fringe benefits payable by employers.
     The labor rate to be used as a base index for this Lease shall be $12.81.

     The Consumer Price Index to be used shall be the Revised Consumer Price
     Index for Urban Wage Earners and Clerical Workers, U.S. City Average,
     All-Items Series (1982-1984 = 100), as published by
<PAGE>

     the U.S. Department of Labor, Bureau of Statistics. If this index is
     revised or changed (as, for example, by taking the average index for
     different years as the base figure of 100), the base index shall be
     adjusted accordingly. In the event such index is discontinued, the index
     promulgated by the Department of Labor most closely approximating the above
     referenced index shall be used as the base index. The Consumer Price Index
     to be used as the base index for this Lease shall be 158.3.

     The cost per kilowatt-hour of electricity consumed in the Westin Building
     (including seasonal factors and any tax or surcharge that may be imposed),
     shall be determined by dividing the total amount billed to Account No.
     171001453015 for the supply of electricity consumed primarily during the
     month of September by the consumption shown in the billing column entitled
     "Consumption kwh/kvarh." The cost to be used as a base index for this Lease
     shall be $.0401 per kilowatt-hour.

26   NOTICES

     All notices under this Lease shall be in writing and delivered in person or
     sent by registered or certified mail to Owner at its offices in Building
     and to Tenant at Premises, or to such other place as may be set forth in
     Article 1(h) or hereafter designated by either party in writing.

27   NAME OF BUILDING

     Owner reserves the right in its sole discretion to change the name of
     Building from that specified in Article 3.

28   CONSTRUCTION

     The titles to articles of this Lease are not a part of this Lease and shall
     have no effect upon the construction or interpretation of any part thereof.
     This Lease shall be construed and governed by the law of the State of
     Washington.

29   TIME OF ESSENCE

     Time is of the essence of this Lease.

30   FORCE MAJEUR

     In the event either Owner or Tenant shall be delayed or hindered in or
     prevented from the performance of any act required hereunder by reason of
     strikes, lockouts, labor troubles, inability to procure materials, failure
     of power, restrictive governmental laws or regulations, riots,
     insurrection, war or any reason era like nature, not the fault of the party
     delayed in performing work or doing acts required under the terms of this
     Lease, then performance of' such act shall be excused for the period of
     such delay, provided that the provisions hereof shall not operate to excuse
     Tenant from prompt payment of' rent or any other payments required by
     Tenant hereunder.

IN WITNESS WHEREOF, Owner and Tenant have signed this Lease on the dates noted
below.

OWNER:                                  TENANT:
-----                                   ------

SIXTH & VIRGINIA PROPERTIES,            MEDLYNX, LLC
 A Washington General Partnership        A Washington Corporation

By Clise properties Inc., a Partner

By    /s/                               By    /s/ Kelly Jorgenson
  ----------------------------            -------------------------------

Its       President                     Its       President
   ---------------------------             ------------------------------

Date      2-26-98                       Date      2/10/98
    --------------------------              -----------------------------
<PAGE>

CLISE COMPANY, a Partner
By Retail Realty, Inc.,

By     /s/
  ----------------------------

Its       President
   ---------------------------

Date      2-26-98
    --------------------------

GUARANTEE

For and in consideration of execution of this Lease, Kelly Jorgenson guarantees
the performance of all obligations of Medlynx, LLC, as said obligations exist
under all terms and conditions of this Lease and any modifications thereto.

                                             /s/ Kelly Jorgenson
                                             --------------------------

STATE OF WASHINGTON  )
                     ) ss.
COUNTY OF KING       )

I certify that I know or have satisfactory evidence that A.M. Clise is the
person who appeared before me and said person acknowledged that he signed this
instrument, on oath stated that he was authorized to execute the instrument and
acknowledged it as the President of CLISE PROPERTIES, INC., a partner of SIXTH &
VIRGINIA PROPERTIES, a Washington general partnership, to be the free and
voluntary act of such party for the uses and purposes mentioned in the
instrument.

     Dated:  2/26/98
           ---------------

   [SEAL]                               /s/ Jennifer A. Richards
                                        ----------------------------------------
                                        Print Name: Jennifer A. Richards
                                                   -----------------------------
                                        NOTARY PUBLIC in and for the State of
                                        Washington, residing at   Issaquah
                                                                ----------------
                                        My commission expires:   2/7/99
                                                              ------------------

STATE OF WASHINGTON  )
                     ) ss.
COUNTY OF KING       )

I certify that I know or have satisfactory evidence that A.M. Clise is the
person who appeared before me and said person acknowledged that he signed this
instrument, on oath stated that he was authorized to execute the instrument and
acknowledged it as the President of RETAIL REALTY, INC., a partner of CLISE
COMPANY, a partnership, for and on behalf of CLISE COMPANY, which in turn is a
partner of SIXTH & VIRGINIA PROPERTIES, a Washington general partnership, to be
the free and voluntary act of such party for the uses and purposes mentioned in
the instrument.

     Dated:  2/26/98
           ---------------

   [SEAL]                               /s/ Jennifer A. Richards
                                        ----------------------------------------
                                        Print Name: Jennifer A. Richards
                                                   -----------------------------
                                        NOTARY PUBLIC in and for the State of
                                        Washington, residing at   Issaquah
                                                                ----------------
                                        My commission expires:   2/7/99
                                                              ------------------

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