EXHIBT 10.17
                       Promissory Note Form with Addendum

Promissory Note

FOR VALUE  RECEIVED,  SENSE  HOLDINGS,  INC., a Florida  corporation,  having an
office at 7300 W. McNabb Road, Suite 117, Tamarac,  FL 33321 ("Maker")  promises
to pay to the order of, (the  "Lender") in lawful money of the United  States of
America in immediate  available funds,  the principal sum of _________  DOLLARS,
together with interest on the unpaid principal amount hereof as provided below.

Interest on the unpaid  principal  amount of this note shall be paid at the rate
of ten percent (10%) per annum. Interest shall be calculated daily, based upon a
360-day year.  Interest  shall accrue and become due and payable on the Maturity
Date (as herein  defined).  In no event shall interest exceed the maximum amount
permitted by law; and any such excess shall be treated as a payment of principal
hereon, and be allocated in reverse order of maturity.

The maturity date of this note will be 180 days from the date hereof.

Lender will receive  _________  shares of Class A common stock in Sense Holdings
(SEHO) to be issued immediately upon acceptance of this agreement.  Lenders will
advance an aggregate of $600,000  (the  "Loans") to Sense  Holdings,  Inc.  Each
lender must advance a minimum of $30,000. At the present time, it is anticipated
that there will be a maximum of 20 lenders,  each having a note in the amount of
$30,000 and provide the investor with 30,000 shares per unit.  Each note will be
for a period of six months and will bear interest at the rate of 10% per annum.

The Notes are secured by the Intellectual  Property and any associated rights to
the  Intellectual  Property  owned by the  Company.  The  Company has agreed the
shares  purchased in this offering  will have demand and piggyback  registration
rights.  These  rights will last for a period of two years from the closing date
of  this  offering.   In  the  event  of  a  sale  of  the  collateral   assets,
simultaneously  with the closing of such sale, the Note  obligation  must be met
before any other use of the proceeds is permitted.

Holders of the Collateralized  Notes must be made aware in the event the Company
receives an offer for any  underlying  Intellectual  Property and the associated
rights.

In the event of default,  the Holders of this note will be granted veto power in
the  decision to sell the  underlying  Intellectual  Property or the  associated
rights to the Intellectual Property.

This Note may be amended only by an instrument in writing  executed by the party
against which enforcement of the amendment is sought.

IN WITNESS WHEREOF,  Maker has executed and delivered the Note on the Date first
written above.

Signatures:

<PAGE>
                       AGREEMENT TO MODIFY PROMISSORY NOTE


                                                      Recitals

     The below  indicated  Maker  and  Lender  have  previously  entered  into a
promissory note with a maturity date of 180 days from the execution of the Note.

     The Maker and the Lender have agreed to an extension  of the Maturity  Date
of the Note in consideration for the terms described below.

     NOW, THEREFORE, the parties agree as follows:

1. The Maturity Date of the Note is extended until September 1, 2002;

2. The Note which was not convertible  into Common Stock is now convertible into
Common Stock of the Maker at a conversion  price of $0.75 per share,  subject to
normal   adjustments   in  the   event   of   reorganizations,   stock   splits,
recapitalizations and similar transactions.

3. The Lender shall have the same registration rights with respect to the Common
Stock underlying the Notes as pertain to the Common Stock of the Maker issued to
the Lender in connection with the issuance of the Note.

4. Except as modified  hereby,  all other terms of the Note,  including  without
limitation,  the security interest in the Intellectual Property, shall remain in
full force and effect.

     IN WITNESS  WHEREOF,  the  undersigned  have entered into this Agreement to
Modify Note as of this __________ day of ____________, 2001.


                                     MAKER:

                                         SENSE HOLDINGS, INC.


                                         By: __________________________
                                         Name: _______________________
                                         Title: ________________________


                                     LENDER: