Document:

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LEASE SCHEDULE                                       FINOVA CAPITAL CORPORATION
No. 4125.02A                                         311 SOUTH WACKER DRIVE
                                                     SUITE 4400
                                                     CHICAGO, ILLINOIS 60606

    The following described equipment and accessories are leased by Lessor to
    Lessee, on the terms specified in this Lease Schedule, subject to the
    terms and conditions of the Equipment Lease Number 4125 dated April 8,
    1999.

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1.  DESCRIPTION OF EQUIPMENT: One (1) 8 x 40 Calumet Coach Model MMS-355P
    Self-Propelled Mobile Unit, VIN #44KFB628OWWZ16938.

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2.  SELLER:             Calumet Coach Company
                        -------------------------------------------------------
    SELLER'S ADDRESS:   2150 East Dolton Road, Calumet City, IL 60409
                        -------------------------------------------------------

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3.  TERM:               60 MONTHS             4.  SECURITY DEPOSIT:   N/A
                        -------------------                       --------------

5.  RENTAL PAYMENTS: $2,875.88 per period for three (3) consecutive monthly
rental periods; $3,954.34 per period for the next three (3) consecutive monthly
rental periods; and $6,171.14 per period for the remaining fifty four
(54) consecutive rental periods.
    To each rental payment, when paid, shall be added the amount of any
applicable sales or use tax.

6.  ADVANCE RENTALS:  $ 2,875.88  to be applied to the  FIRST  rental payments.
                        --------                       -------
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7.  EQUIPMENT LOCATION:  2240 Shelter Island Drive        San Diego
                         -----------------------------------------------------
                          (Street)                         (City)

                         San Diego                           CA
                         -----------------------------------------------------
                          (County)                         (State)

8.  LESSEE'S ADDRESS (if different than paragraph 7 above):

------------------------------------------------------------------------------
      (Street)         (City)          (State)          (Zip Code)

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9.  Other Provisions

-  "Notwithstanding anything to the contrary in Equipment lease F4125 and
    provided Lessee is not in default thereunder, Lessee, upon giving Lessor
    ninety (90) days prior written notice, shall have a one time Option to
    Purchase not less than all the Equipment under this Lease at maturity of
    the base lease term for the then fair market value not to exceed twelve
    percent (12.00%) of the original equipment cost a paid by Lessor the
    Equipment and any other items or charges included in the Lease plus
    applicable sales taxes."

-   FINOVA has the option to adjust its monthly payment consistent with
    increases in the five-year, fixed-rate cost of financing from the date of
    this Lease Schedule to delivery and acceptance of the Equipment. Upon
    acceptance of the Equipment, the monthly payment will become fixed for the
    entire term.
--------------------------------------------------------------------------------

The parties hereto have executed this Lease Schedule as of the 22nd day of
December, 1999.

FINOVA CAPITAL CORPORATION                    MOBILE PET SYSTEMS, INC.
--------------------------                    --------------------------
Lessor                                         Lessee

By:                                       By:  /s/ Paul Crowe, CEO
    ------------------------------            ------------------------------
                   Title                                       Title

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LEASE SCHEDULE                                       FINOVA CAPITAL CORPORATION
No. 4125.02B                                         311 SOUTH WACKER DRIVE
                                                     SUITE 4400
                                                     CHICAGO, ILLINOIS 60606

    The following described equipment and accessories are leased by Lessor to
    Lessee, on the terms specified in this Lease Schedule, subject to the
    terms and conditions of the Equipment Lease Number 4125 dated April 8,
    1999.

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1.  DESCRIPTION OF EQUIPMENT: One (1) Siemens ECAT EXACT P.E.T. Scanner
    System as further itemized on the Equipment Schedule Addendum No. One
    attached hereto and made a part hereof.

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2.  SELLER:             Siemens Medical Systems, Inc.
                        -------------------------------------------------------
    SELLER'S ADDRESS:   186 Wood Avenue South, Iselin, NJ 08830
                        -------------------------------------------------------

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3.  TERM:               60 MONTHS              4.  SECURITY DEPOSIT:    N/A
                      -------------------                            -----------

5.  RENTAL PAYMENTS: $13,124.12 per period for the three (3) consecutive
monthly rental periods; $18,045.66 per period for the next three (3) consecutive
monthly rental periods; and $28,162.11 per period for the remaining fifty four
(54) consecutive rental periods.

    To each rental payment, when paid, shall be added the amount of any
applicable sales or use tax.

6.  ADVANCE RENTALS:  $ 13,124.12  to be applied to the  FIRST  rental payments.
                        ---------                       -------
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7.  EQUIPMENT LOCATION:  2240 Shelter Island Drive, Suite 110       San Diego
                         -----------------------------------------------------
                          (Street)                                   (City)

                         San Diego                           CA
                         -----------------------------------------------------
                          (County)                         (State)

8.  LESSEE'S ADDRESS (if different than paragraph 7 above):

------------------------------------------------------------------------------
      (Street)         (City)          (State)          (Zip Code)

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9.  Other Provisions

-   Addendum No. One attached hereon and made a part hereof.

-  "Notwithstanding anything to the contrary in Equipment lease F4125 and
    provided Lessee is not in default thereunder, Lessee, upon giving Lessor
    ninety (90) days prior written notice, shall have a one time Option to
    Purchase not less than all the Equipment under this Lease at maturity of
    the base lease term for the then fair market value not to exceed twelve
    percent (12.00%) of the original equipment cost as paid by Lessor the
    Equipment and any other items or charges included in the Lease plus
    applicable sales taxes."

-   FINOVA has the option to adjust its monthly payment consistent with
    increases in the five-year, fixed-rate cost of financing from the date of
    this Lease Schedule to delivery and acceptance of the Equipment. Upon
    acceptance of the Equipment, the monthly payment will become fixed for the
    entire term.
--------------------------------------------------------------------------------

The parties hereto have executed this Lease Schedule as of the 22nd day of
December, 1999.

FINOVA CAPITAL CORPORATION                    MOBILE PET SYSTEMS, INC.
--------------------------                    ------------------------------
Lessor                                         Lessee

By:                                           By: /s/ Paul Crowe, CEO
    ------------------------------            ------------------------------
                   Title                                       Title

<PAGE>

                               ADDENDUM NO. ONE
                                      TO
                         LEASE SCHEDULE NO. 4125.02B
                                   BETWEEN
                       FINOVA CAPITAL CORPORATION (LESSOR)
                                      AND
                        MOBILE PET SYSTEMS, INC. (LESSEE)

                      DATED THE 22ND DAY OF DECEMBER, 1999

                               EQUIPMENT SCHEDULE

ONE (1) SIEMENS ECAT EXACT P.E.T. SCANNER SYSTEM

The ECAT EXACT is a high-resolution positron emission tomography system for
imaging biochemical processes and metabolism for whole body applications. The
multi-detector ring system provides 3D acquisition and reconstruction in the
static and dynamic modes.

The ECAT EXACT consists of a 47 image plane system with a 16.2 cm (6.4 in)
field of view.

     High spatial slice resolution in transaxial and axial dimensions
     Three-dimensional display of organs with a large axial view
     Excellent volume sensitivity
     Fast acquisition and reconstruction of 64 x 64 and 128 x 128 matrices
     High-resolution, flicker free, color display monitor
     Unique block detector technology provides excellent temporal and energy
resolution response
     Simultaneous data acquisition and image reconstruction for high patient
throughput
     Retractable rotating rod source holders for quick and accurate
attenuation correction. (Ge-68 is available in safe, solid form from
recommended vendors)
     Water-cooled gentry for quiet operation
     Window-oriented operating software

The system consists of:

Whole Body Ring Detector Gantry:
     824 mm detector ring diameter
     56.2 cm gantry aperture
     16.2 cm (6.4 inch) axial field of view
     Nine laser lines for precise, reproducible patient positioning
     Dual operator controls on gantry for positioning from either side of
patient
     Count rate monitor at gantry control panels
     Three integrated retractable transmission rod source holders which
extend/retract from a lead housing under computer control for enhanced
patient throughput and reduced radiation exposure

Patient Handling System:
     Low attenuation foam core carbon fiber pallet
     57 to 93 cm (22 to 36 inch) vertical motion range
     195 cm (77 inch) horizontal scan range
     Low attenuation head holder
     Maximum patient weight of 159 kg (350 lbs)

Data Acquisition/Processing and Storage Electronics:
     Image plane coincidence processor
     Real-time sorter (RTS) with 64 MB memory
     VME Bus acquisition controller
     1 Quad 1860 array processor
     SCSI (small computer system interface) adapter to the VME Bus
     2.0 GB Acquisition disk
     Ethernet interface to operator's console
     Sparc processor

                                       1

<PAGE>

                               ADDENDUM NO. ONE
                                      TO
                         LEASE SCHEDULE NO. 4125.02B
                                   BETWEEN
                       FINOVA CAPITAL CORPORATION (LESSOR)
                                      AND
                        MOBILE PET SYSTEMS, INC. (LESSEE)

                      DATED THE 22ND DAY OF DECEMBER, 1999

                               EQUIPMENT SCHEDULE

Operator's Console for Image Display and Analysis:
     UltraSPARC 60 1300 Workstation with 20 inch, high resolution monitor
     256 MB main memory
     1 x 4.2 GB, 1 x 9.0 GB Internal disk storage
     2.6 GB erasable optical storage system for archiving image data
     CD ROM drive (mounted in desktop storage unit)
     600 dpi laser printer
     Ethernet connection to data acquisition/processing and storage electronics
     4mm DAT (digital audio tape) archive system, mounted in desktop storage
unit
     UNIX operating system and utilities
     TCP/IP and network file system communication software
     Floppy drive
     ECAT Software version 7.1 features, including iterative reconstruction,
segmented attenuation correction, and the whole body protocol

ECAT STANDARD SOFTWARE
Image Acquisition:
     Transmission scan allows accurate measurement of tissue attenuation
correction coefficients
     Static emission scan
     Dynamic emission scan
     Acquisition protocols
     Image reconstruction and processing
     Wide variety of reconstruction filters
     Image size and displacement parameters
     Calculated or measured attenuation correction

Display Software:
     Window-oriented to allow simultaneous acquisition, reconstruction, data
processing and image display
     Image zoom and magnification
     Multi-image static display
     Any oblique data re-orientation
     Cine mode display
     Multiple plane dynamic displays
     Region of interest and image profiles
     Image filtering, summing and arithmetic
     Regions of interest and image statistics
     Screen save/restore operations
     Image labeling with variable fonts and graphics
     Interactive color translation table operations
     Three-dimensional volume interactive data review (transverse, sagittal and
coronal displays)

Utilities Software:
     Patient database
     Patient data archive
     Motion control
     System calibration
     System normalization
     Performance tests

                                       2

<PAGE>

                               ADDENDUM NO. ONE
                                      TO
                         LEASE SCHEDULE NO. 4125.02B
                                   BETWEEN
                       FINOVA CAPITAL CORPORATION (LESSOR)
                                      AND
                        MOBILE PET SYSTEMS, INC. (LESSEE)

                      DATED THE 22ND DAY OF DECEMBER, 1999

                               EQUIPMENT SCHEDULE

     System diagnostics

Educational Software:
     Multi-media educational package LPP (Let's Play PET) for use on separate
Macintosh or ICON (not provided with system)

Systems Documentation (1 set):
     ECAT scanner software manual
     ECAT scanner hardware manual

     Water-cooled, whole-body gantry
     9216 Bismuth germanate (BGO) crystals
     16.2 cm (6.4 inch) axial field of view
     Simultaneous acquisition of up to 47 contiguous slices
     23 Interplane retractable septa for high axial resolution, high
sensitivity, and minimum scatter to permit 3-D acquisition
     Full-body patient couch and head holder
     Data acquisition and electronics
     ECAT Software
     Operators console and peripherals

PRE-INSTALL KIT EXACT

ISOLATION TRANSFORMER (US)

Transformer for isolating ECAT power from line power

GANTRY AIR/WATER CHILLER (60HZ)

Closed system air/water chiller. Requires onsite chilled water. Requires
siting in well-ventilated utility room.

ECAT EXACT INSTALLATION
Installation by the SMS PET Group is available.

PET APPLICATIONS TRAINING (PER DAY)

Operator's training for ECAT Scanners performed by applications specialist.
Scheduling for training is available upon request.

FINOVA CAPITAL CORPORATION                    MOBILE PET SYSTEMS, INC.
----------------------------------            ------------------------------
Lessor                                         Lessee

By:                                           By: /s/  Paul Crowe,  CEO
    ------------------------------            ------------------------------
                   Title                                       Title

                                       3<PAGE>

                                                                   EXHIBIT 10.1

                           SHARE DISPOSITION AGREEMENT

                                     between

                               BOCA RESEARCH, INC.

                                       and

                        INFOMATEC AG INTERNATIONAL, INC.

                              --------------------

                                  May 31, 2000
                              --------------------

<PAGE>

                           SHARE DISPOSITION AGREEMENT

         AGREEMENT made and entered into on this 31st day of May, 2000, among
Boca Research, Inc., a Florida corporation (the "Company"), and Infomatec AG
International, Inc., a Delaware corporation (the "Purchaser").

                                   WITNESSETH

         WHEREAS, the Company sold to the Purchaser 1,747,965 shares of the
Company's Stock, par value $0.01 per share (the "Common Stock"), of the Company
pursuant to a Common Stock Purchase Agreement between the Company and the
Purchaser dated as of April 28, 1999, as amended by the Amended Common Stock
Purchase Agreement dated as of May 21, 1999 (the "Purchase Agreement");

         WHEREAS, Section 2.08 of the Purchase Agreement contained certain
registration rights;

         WHEREAS, the Purchaser has exercised the registration rights contained
in Section 2.08 of the Purchase Agreement;

         WHEREAS, the Company has filed on the date hereof a Registration
Statement on Form S-3 (the "Form S-3") with respect to 1,250,000 shares of the
Common Stock pursuant to the request by the Purchaser; and

         WHEREAS, the Company and the Purchaser are entering into this Agreement
to provide for certain rights and obligations in connection with the exercise of
the registration rights contained in Section 2.08 of the Purchase Agreement,
upon the terms and subject to the conditions hereinafter set forth;

         NOW, THEREFORE, in consideration of the mutual premises and covenants
contained herein, and of other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto, intending to
be legally bound, hereby agree as follows:

                                    ARTICLE I

         Section 1.01 METHOD OF DISPOSITION. Upon the effectiveness of the Form
S-3, the Purchaser agrees to sell no more than 611,788 shares of Common Stock
held by Purchaser and registered under the Form S-3 in any given consecutive,
three-month period commencing on the date the Form S-3 is declared effective by
the Securities and Exchange Commission during the Effective Period (as defined
below).

         Section 1.02 EFFECTIVE PERIOD. The Company shall use its reasonable
commercial efforts to cause the Form S-3 to become and remain effective for a
one-year period (the "Effective Period") commencing on the date such Form S-3 is
declared effective by the Securities and Exchange Commission.

         Section 1.03 EXPENSES. Notwithstanding anything to the contrary in
Section 2.08 of the Purchase Agreement, the Company hereby agrees to pay the
expenses attributable to the registration of the shares of Common Stock held by
the Purchaser, other than fees and disbursements of the Purchaser's counsel and
any brokerage commissions, which are to be paid by the Purchaser.

         Section 1.04 REGISTRATION RIGHTS. The parties hereby acknowledge that
upon the effectiveness of the Form S-3, the Company shall have fulfilled its
obligation to register the shares of Common Stock purchased by the Purchaser
under the Purchase Agreement pursuant to one request by the Purchaser under
Section 2.08 of the

<PAGE>

Purchase Agreement. In addition, the parties acknowledge that, upon the
effectiveness of the Form S-3, the Purchaser shall be entitled to make one
additional request of the Company to register only those shares of Common Stock
purchased by the Purchaser under the Purchase Agreement pursuant to Section 2.08
of the Purchase Agreement and that any such registration shall be subject to
Sections 1.02 and 1.03 hereof.

                                   ARTICLE II

         Section 2.01 DISPOSITION OF COMMON STOCK. Nothing contained herein
shall in any way supersede, replace, diminish, or nullify any other restrictions
or obligations promulgated by the Securities Act of 1933, as amended, or
otherwise binding the Purchaser with respect to disposition of the Common Stock.

         Section 2.02. ENTIRE AGREEMENT. This Agreement, together with the
Purchase Agreement, represent the entire agreement and understanding among the
parties hereto with respect to the subject matter hereof and supersedes any and
all prior oral and written agreements, arrangements and understandings among the
parties hereto with respect to such subject matter, and can be amended,
supplemented or changed, and any provision hereof can be waived, only by a
written instrument making specific reference to this Agreement signed by the
party against whom enforcement of any such amendment, supplement, modification
or waiver is sought.

         Section 2.03. SUCCESSORS AND ASSIGNS. This Agreement shall be binding
upon the parties hereto and their respective successors and assigns, including
any person to whom the Purchaser may assign its right and obligations to
purchase Common Stock and shall inure to the benefit of the parties hereto and,
their respective successors and assigns.

         Section 2.04. PARAGRAPH HEADINGS. The paragraph headings contained in
this Agreement are for general reference purposes only and shall not affect in
any manner the meaning or interpretation of the terms or other provisions of
this Agreement.

         Section 2.05. APPLICABLE LAW. This Agreement shall be governed by,
construed and enforced in accordance with the laws of the State of Florida,
applicable to contracts to be made, executed, delivered and performed wholly
within such state, and in any case, without regard to the conflicts of law
principles of such state.

         Section 2.06. SEVERABILITY. If at any time subsequent to the date
hereof, any provision of this Agreement shall be held by any court of competent
jurisdiction to be illegal, void or unenforceable, such provision shall be of no
force and effect, but the illegality or unenforceability of such provision shall
have no effect upon and shall not impair the enforceability of any other
provision of this Agreement.

         Section 2.07. EQUITABLE REMEDIES. The parties hereto agree that
irreparable harm would occur in the event that any of the covenants contained in
this Agreement were not performed in all material respects by the parties hereto
in accordance with their specific terms or conditions or were otherwise
breached, and that money damages are an inadequate remedy for breach thereof
because of the difficulty of ascertaining and quantifying the amount of damage
that will be suffered by the parties hereto in the event that such covenants are
not performed in accordance with their terms or are otherwise breached. It is
accordingly hereby agreed that the parties hereto shall be entitled to seek an
injunction or injunctions to restrain, enjoin and prevent breaches and
violations of any of the covenants, contained in this Agreement by the other
parties and to enforce specifically the terms and provisions hereof in any court
of the United States or any state having competent jurisdiction,

<PAGE>

such remedy being in addition to and not in lieu of, any other rights and
remedies to which the other parties are entitled to at law or in equity.

         Section 2.8. NO WAIVER. The failure of any party at any time or times
to require performance of any provision hereof shall not affect the right at a
later time to enforce the same. No waiver by any party of any condition, and no
breach of any provision, term, covenant, representation or warranty contained in
this Agreement, whether by conduct or otherwise, in any one or more instances,
shall be deemed to be construed as a further or continuing waiver of any such
condition or of the breach of any other provision, term, covenant,
representation or warranty of this Agreement.

         Section 2.9. COUNTERPARTS. This Agreement may be executed in one or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute but one and the same original instrument.

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have duly executed and delivered
this Agreement, as of the day and year first above written.

                                       COMPANY

                                       BOCA RESEARCH, INC.

                                       By: /s/ Robert P. Heinlein
                                          -------------------------------------
                                       Name: Robert P. Heinlein
                                       Title: Chief Financial Officer

                                       PURCHASER

                                       INFOMATEC AG INTERANTIONAL, INC.

                                       By: /s/ Eduard Will
                                          -------------------------------------
                                             Authorized Signatory

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