Document:

<PAGE>
                                                                    Exhibit 10.7

LETTER AGREEMENT DATED MARCH 23, 2000 BETWEEN SURE MEDICAL INCORPORATED AND
MY-TECH, INC.

                                  March 23,2000

Board of Directors
MY-TECH, INC.
13202 Burns Lake Drive
Tampa, FL 33612

Gentlemen:

         This letter agreement, when countersigned as indicated below
("Agreement"), will confirm and memorialize the agreement by and among, on the
one hand, SURE MEDICAL INCORPORATED, a corporation organized under the laws of
the State of Nevada ("SMI") , and on the other hand, MY-TECH, INC., a
corporation organized under the laws of the State of Nevada ("MY-TECH"), to
enter into the within-described series of transactions (the "Transactions")
whereby SMI will acquire all of MY-TECH's right, title and interest to a certain
cardiovascular research and development project under way at the University of
North Texas Health Science Center (the "University"), all upon and subject to
the following terms and conditions.

         This Agreement is made and entered into by SMI based upon the following
facts:

         A.       MY-TECH has entered into a contract (the "University
                  Contract") to sponsor, fund, develop and acquire the
                  commercial rights to a Project known as ADRENALIN BOOSTER (
                  the "Adrenalin Booster Project"), which is more particularly
                  described in Schedule A attached hereto.

         B.       MY-TECH has the right to assign all its right, title and
                  interest under the University Contract to SMI.

         C.       SMI desires to acquire the University Contract for the
                  Adrenalin Booster Project.

         Based upon these facts, and the representations and warranties
contained herein, our agreement is as follows:

         1.       Subject to the satisfaction (or waiver) of the terms and
                  conditions contained herein, SMI shall pay MY-TECH Three
                  Million Five Hundred Thousand Dollars (USD3,500,000) payable
                  $200,000 on or before April 1, 2000 and the remaining balance
                  in eleven (11) equal installments of USD 300,000 with each
                  subsequent $300,000 installment due on the lst day of each
                  month thereafter.

<PAGE>

         2.       Upon full payment of all installments due hereunder SMI will
                  acquire the commercial ownership rights of MY-TECH and the
                  obligations to complete and manage or supervise the management
                  of the Adrenalin Booster Project.

         3.       As soon as practicable after the final installment payment is
                  made hereof, MY-TECH shall assign its University Contract for
                  the Adrenalin Booster Project to SMI

         4.       If any installment is not paid within thirty (30) days of its
                  due date, SMI's rights under this Letter Agreement shall be
                  voided and all payments previously made to MY-TECH shall be
                  forfeited.

         5.       Representations and Warranties of MY-TECH. In connection
                  herewith, and as an inducement to SMI to enter into this
                  Agreement, MY-TECH confirms that:

                  A.       The University Contract. The contractual rights, when
                           assigned, will be free and clear of liens, claims and
                           encumbrances; MY-TECH has all necessary right and
                           power to enter into this Agreement and to cause the
                           transfer to SMI of the Adrenalin Booster Project as
                           contemplated herein; and, that any necessary approval
                           by regulatory authorities, shareholders of MY-TECH or
                           third parties will be obtained prior to March 1,
                           2001.

                  B.       Corporate Status. It is duly organized, validly
                           existing, and in good standing under the laws of the
                           State of Nevada.

                  C.       Compliance with Laws, Rules and Regulations. MY-TECH
                           is in compliance with all applicable laws, rules and
                           regulations, relating to its business, except to the
                           extent that non-compliance would not materially and
                           adversely affect its business, operations, or the
                           value of its assets.

                  D.       Provide Additional Information: MY-TECH will furnish
                           SMI with such documentation and information regarding
                           the University Contract as is reasonably requested.

         6.       Conditions Precedent to Consummation of Transactions. The
                  obligation of SMI or MY-TECH to effect the Transactions
                  contemplated by this Agreement is subject to:

                  A.       Acceptance of the Adrenalin Booster Project. On or
                           before March 1, 2001 SMI shall be satisfied with the
                           results of its due diligence review of the status and
                           feasibility of the Adrenalin Booster Project.

                  B.       University Consent. By March 1, 2001 the University
                           shall have consented to MY-TECH's assignment of the
                           University Contract to SMI.

                                       2
<PAGE>

         7.       Additional Documents.

                  SMI and MY-TECH each agree to execute such additional
instruments and take such action as may be reasonably requested by the other
party to carry out the intent and purposes of this Agreement.

         8.       Notices.

                  All notices and other communications hereunder shall be in
writing and shall be sent by prepaid first class mail to the parties at the
following addresses, as amended by the parties with written notice to the other:

                  To MY-TECH:    13202 Burns Lake Drive, Tampa, FL 33612

                  To SMI :       76 Spindrift Trail, Kitty Hawk, NC 27949

         9.       Counterparts.

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

         10.      Applicable Law.

                  This Agreement was negotiated and shall be constructed under
and governed by the laws of Nevada, notwithstanding any conflict-of-law
provision to the contrary.

         11.      Authority.

                  The persons executing this Agreement are duly authorized to do
so. Further, the parties hereto each represent that each has taken all action
required by law or otherwise to properly and legally execute and carry out the
terms of this Agreement.

         12.      Entire Agreement.

                  This Agreement sets forth the entire understanding between the
parties hereto and no other prior written or oral statement or agreement shall
be recognized or enforced.

         13.      Severability.

                  If a court of competent jurisdiction determines that any
clause or provision of this Agreement is invalid, illegal, or unenforceable, the
other clauses and provisions of the Agreement shall remain in full force and
effect and the clauses and provisions which determined to be void, illegal, or
unenforceable shall be limited so that they shall remain in effect to the extent
permissible by law.

                                       3
<PAGE>

         14.      Assignment.

                  Neither party may assign this Agreement without the express
written consent of the other party.

         15.      Waiver.

                  No waiver by any party of the performance of any obligation by
the other shall be construed as a waiver of the same or any other default, then,
theretofore, or thereafter occurring or existing. This Agreement may only be
amended by a writing signed by all parties hereto.

         16.      Headings.

                  The section and subsection headings in this Agreement are
inserted for convenience only and shall not affect in any way the meaning or
interpretation of this Agreement.

         17.      Facsimile Counterparts.

                  If a party signs this Agreement and then transmits an
electronic facsimile of the signature page to the other party, the party who
receives the transmission may rely upon the electronic facsimile as a signed
original of this Agreement.

Sincerely,

SURE MEDICAL INCORPORATED

By: /S/ FRED JAY BENDER
   -------------------------------------------
         Fred Jay Bender, President

ACCEPTED AND AGREED THIS 23rd DAY OF MARCH, 2000.

MY-TECH, INC.

By: /s/ WILLIAM A. STAFFORD
   -------------------------------------------
   Name: William A. Stafford, Ph.D., President

                                       4
<PAGE>

                                  MY-TECH, INC.

                                1905 Astor Avenue
                                 Tampa, FL 33612
                                  813-935-6704

January 8, 2001

Mr. Steve Rosner
Sure Medical Incorporated
3509 Cord Grass Drives

Valrico, FL 33594

Dear Steve,

In conjunction with the change in management of Sure Medical, Inc. (SMI), this
letter will confirm our prior conversations, whereby MY-TECH, INC. will modify
the agreement between SMI and MY-TECH, INC. dated March 23, 2000 as follows:

MY-TECH, INC. agrees to accept as payment in full the amount of Three Million,
Two Hundred Thirty Thousand shares (3,230,000) of SMI stock in lieu of the Three
Million, Five Hundred Thousand Dollars ($3,500,000.00) in cash as described in
items 1-4 of the March agreement. MY-TECH, INC. is doing this because it
believes the new management of SMI will increase the share value beyond the
original cash transaction.

All other portions of the March 23, 2000 agreement will remain unaffected.

I look forward to a mutually profitable relationship for all concerned.

Sincerely,

William A. Stafford, M.D.
President<PAGE>
                                                                   EXHIBIT 10.17

                                 EXECUTION COPY

                                 AMENDMENT NO. 1

                          Dated as of November 16, 2001

                                       to

                           RECEIVABLES SALE AGREEMENT

                           Dated as of August 10, 2000

                  THIS AMENDMENT NO. 1 dated as of November 16, 2001
("Amendment") is entered into by and among Jabil Circuit Financial, Inc., a
Delaware corporation (the "Buyer"), Jabil Circuit, Inc., a Delaware corporation
("Jabil") and Jabil Circuit of Texas, LP ("Jabil Texas", together with Jabil,
each individually, an "Originator" and collectively, the "Originators").
Capitalized terms used herein and not otherwise defined herein shall have the
meanings ascribed to them in the RSA, as defined below.

                             PRELIMINARY STATEMENTS

         A.       The Buyer and the Originators are parties to that certain
Receivables Sale Agreement dated as of August 10, 2000 (as the same may be
further amended, restated, supplemented or otherwise modified from time to time,
the "RSA").

         B.       The parties hereto have agreed to amend the RSA on the terms
and conditions hereinafter set forth.

                  NOW, THEREFORE, in consideration of the premises set forth
above, and other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the Buyer and the Originators agree as follows:

         SECTION 1. Amendments to the RSA. Effective as of the date hereof,
subject to the satisfaction of the conditions precedent set forth in Section 2
below, the RSA is hereby amended as follows:

         1.1      Sections 2.1(i), 2.1(j) and 4.2(d) are each hereby amended to
delete the parenthetical "(other than the CISCO Receivables)" contained therein.

         1.2      Section 4.1(b) of the RSA is hereby amended to delete clause
(vi) thereof in its entirety and replace it with the following:

                           "(vi) Jabil Mexico and Jabil Chihuahua. As soon as
         such Originator becomes aware thereof, notice of any action taken by
         Jabil Mexico, Jabil Chihuahua or any other Person to assert any claim
         against any property of Jabil, Jabil Mexico or Jabil Chihuahua in
         Mexico."

                                       1
<PAGE>

         1.3      Section 4.1(g) of the RSA is hereby amended to delete the
phrase "and with respect to the CISCO Receivables, other than the Adverse Claim
in favor of CISCO Systems, Inc.," contained therein.

         1.4      Section 7.1 of the RSA is hereby amended to delete clause
(xiii) thereof in its entirety and replace it with the following:

                  "(xiii) the operations of Jabil Mexico or Jabil Chihuahua and
         the enforcement of the Agent's and the Purchaser's rights under either
         Estoppel Letter; and"

         1.5      Exhibit I of the RSA is hereby amended to delete the
definition of "CISCO Receivables" contained therein in its entirety.

         1.6      Exhibit I of the RSA is hereby further amended to add the
following definition after the definition of "Jabil" contained therein:

                  " `Jabil Chihuahua' means Jabil Circuit de Chihuahua, S.A. de
         C.V., a corporation organized under the laws of Mexico as a Sociedad
         Anonima de Capital Variable."

         1.7      Exhibit I of the RSA is hereby further amended to delete the
term "Estoppel Letter" appearing in the definition of "Transaction Documents"
contained therein and replace it with the term "Estoppel Letters".

         1.8      Exhibit II of the RSA is hereby amended by to add the
following information under the Guadalajara, Mexico information:

                  CHIHUAHUA, MEXICO
                  c/o Jabil Circuit de Chihuahua SA de CV
                  Alejundro Dumas #11341
                  Complejo Industrial Chihuahua
                  Chihuahua, Chihuahua, Mexico CP31109

         1.9      Exhibit III of the RSA is hereby amended to add the following
Collection Account information:

<TABLE>
<CAPTION>
                  Collection Bank        Lockbox Address                    Related Collection Account
                  <S>                    <C>                       <C>
                  Bank One, NA           P.O. Box 22825                     10-93863 Jabil Circuit Financial,
                                         Chicago, IL  60673-1228            Inc. (Texas)

                  Bank One, NA           P.O. Box 730802                    11-00221 Jabil Circuit Financial,
                                         Chicago, IL  60673-3303            Inc. (Chihuahua)

                  Bank One, NA           P.O. Box 22275                     10-63544 Jabil Circuit Financial,
                                         Chicago, IL  60673-3303            Inc. (Florida)
</TABLE>

                                       2
<PAGE>

         SECTION 2. Conditions Precedent. This Amendment shall become effective
as of the date first above written, upon receipt by the Buyer of four (4) copies
of this Amendment duly executed by each of the Buyer, Jabil and Jabil Texas and
consented to by the Agent.

         SECTION 3. Covenants, Representations and Warranties of the
Originators.

         3.1      Upon the effectiveness of this Amendment, each of the
Originators hereby reaffirms all covenants, representations and warranties made
by it, to the extent the same are not amended hereby, in the RSA, as amended,
and agrees that all such covenants, representations and warranties shall be
deemed to have been re-made as of the effective date of this Amendment.

         3.2      Each of the Originators hereby represents and warrants, (i)
that this Amendment constitutes the legal, valid and binding obligation of such
Person enforceable against such Person in accordance with its terms, except as
enforceability may be limited by bankruptcy, insolvency, reorganization,
moratorium or similar laws affecting the enforcement of creditors' rights
generally and general principles of equity which may limit the availability of
equitable remedies and (ii) upon the effectiveness of this Amendment, no
Termination Event or Potential Termination Event has occurred or is continuing.

         SECTION 4.  Reference to the Effect on the RSA.

         4.1      Upon the effectiveness of this Amendment, each reference in
the RSA to "this Agreement," "hereunder," "hereof," "herein," "hereby" or words
of like import shall mean and be a reference to the RSA as amended hereby, and
each reference to the RSA in any other document, instrument or agreement
executed and/or delivered in connection with the RSA shall mean and be a
reference to the RSA as amended hereby.

         4.2      Except as specifically amended hereby, the RSA and the other
documents, instruments and agreements executed and/or delivered in connection
therewith shall remain in full force and effect and are hereby ratified and
confirmed.

         4.3      The execution, delivery and effectiveness of this Amendment
shall not operate as a waiver of any right, power or remedy of the Buyer under
the RSA or any of the other Transaction Documents, nor constitute a waiver of
any provision contained therein, except as specifically set forth herein.

         SECTION 5.  Headings.  Section headings in the Amendment are included
herein for convenience of reference only and shall not constitute part of this
Amendment for any other purpose.

         SECTION 6.  GOVERNING LAW.  THIS AMENDMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAW OF CONFLICTS) OF
THE STATE OF NEW YORK.

         SECTION 7.  Counterparts.  This Amendment may be executed by one or
more of the parties to this Amendment on any number of separate counterparts and
all of said counterparts taken together shall be deemed to constitute one and
the same instrument.

                                       3
<PAGE>

         SECTION 8.  Fees and Expenses. Each Originator hereby confirms its
agreement to pay on demand all reasonable costs and expenses in connection with
the preparation, execution and delivery of this Amendment and any of the other
instruments, documents and agreements to be executed and/or delivered in
connection herewith, including, without limitation, the reasonable fees and
out-of-pocket expenses of counsel to the Buyer.

                                       4
<PAGE>
         IN WITNESS WHEREOF, this Amendment has been duly executed as of the day
and year first above written.

                                   JABIL CIRCUIT FINANCIAL, INC.

                                   By:
                                      ---------------------------------
                                   Name:
                                   Title:

                                   JABIL CIRCUIT, INC.

                                   By:
                                      ---------------------------------
                                   Name:
                                   Title:

                                   JABIL CIRCUIT OF TEXAS, LP

                                        By:  Jabil Texas Holdings, LLC,
                                        its sole General Partner

                                           By:  Jabil Circuit, Inc.
                                           its sole Manager and Member

                                   By:
                                      ---------------------------------
                                   Name:
                                   Title:

                       Signature Page to Amendment No. 1

                                       5
<PAGE>
CONSENTED TO:

BANK ONE, NA  (Main Office Chicago),
as a Financial Institution and as Agent

By:
   ---------------------------------
Name:
     -------------------------------
Title:  Authorized Signatory

                                       6

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00033-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00033-of-00352.parquet"}]]