Document:

FIRST AMENDMENT TO NET LEASE AGREEMENT

     THIS  AMENDMENT  TO NET  LEASE AGREEMENT, made  and  entered
into  effective as of the 23 day of August, 2000, by and  between
AEI  Income  &  Growth Fund 23 LLC, ("Fund 23"), whose  principal
business  address is 1300 Minnesota World Trade Center,  30  East
Seventh   Street,   St.   Paul,  Minnesota   55101   (hereinafter
collectively  referred  to  as "Lessor"),  and  Tumbleweed,  Inc.
(hereinafter  referred to as "Lessee"), whose principal  business
address is 1900 Mellwood Avenue, Louisville, Kentucky;

                          WITNESSETH:

     WHEREAS, Lessor is the fee owner of a certain parcel of real
property and improvements located at Kettering, Ohio, and legally
described   in  Exhibit  "A",  which  is  attached   hereto   and
incorporated herein by reference; and

       WHEREAS,   Lessee   has  constructed  the   building   and
improvements  (together  the "Building")  on  the  real  property
described  in  Exhibit "A", which Building is  described  in  the
plans and specifications heretofore submitted to Lessor; and

     WHEREAS,  Lessee and Lessor Fund 23 have entered  into  that
certain  Net  Lease  Agreement  dated  February  25,  2000   (the
"Lease")  providing  for  the lease of  said  real  property  and
Building (said real property and Building hereinafter referred to
as  the  "Leased  Premises"), from  Lessor  upon  the  terms  and
conditions therein provided in the Lease;

     NOW,  THEREFORE,  in  consideration  of  the  Rents,  terms,
covenants, conditions, and agreements hereinafter described to be
paid, kept, and performed by Lessee, including the completion  of
the  Building  and  other  improvements constituting  the  Leased
Premises, Lessee and Lessor do hereby agree to amend the Lease as
follows:

1.    Article 2(A) and (B) of the Lease shall henceforth read  as
follows:

ARTICLE 2.     TERM

     (A)   The term of this Lease ("Term") shall be Fifteen  (15)
consecutive  "Lease  Years", as hereinafter  defined,  commencing
August  23,  2000, plus the period commencing February  25,  2000
("Occupancy  Date") through the effective date hereof,  with  the
contemplated initial term hereof ending on August 31, 2015.

     (B)  The first full Lease Year shall commence on the date of
this First Amendment and continue through August 31, 2015.

2.   Article 4(A) of the Lease shall henceforth read as follows:

ARTICLE 4.  RENT PAYMENTS

     (A)  Annual Rent Payable for the first and second Lease
          Years:  Lessee shall pay to Lessor an annual  Base
          Rent of $120,821.10, which amount shall be payable
          in advance on the first day of each month in equal
          monthly installments of $10,068.43 to Fund 23.  If
          the  first day of the Lease Term is not the  first
          day  of  a  calendar month, then the monthly  Rent
          payable for that partial month shall be a prorated
          portion  of the equal monthly installment of  Base
          Rent.

3.   Article  34  is hereby deleted in its entirety;  Lessor  and
     Lessee agree that the referenced Development Financing Agreement
     is terminated in accordance with its terms.  All other terms and
     conditions of the Lease shall remain in full force and effect.

4.   Lessee has accepted delivery of the Leased Premises and  has
     entered into occupancy thereof;

5.   Lessee  has fully inspected the Premises and found the  same
     to be as required by the Lease, in good order and repair, and all
     conditions under the Lease to be performed by the Lessor have
     been satisfied;

6.   As  of this date, the Lessor is not in default under any  of
     the terms, conditions, provisions or agreements of the Lease and
     the undersigned has no offsets, claims or defenses against the
     Lessor with respect to the Lease.

7.   This  Agreement  may  be executed in multiple  counterparts,
     each of which shall be deemed an original and all of which shall
     constitute one and the same instrument.
8.
IN  WITNESS  WHEREOF, Lessor and Lessee have respectively  signed
and sealed this Lease as of the day and year first above written.

                        LESSEE:  Tumbleweed, Inc.,

                                 By:/s/ Gregory A Compton
                                 Its:  VP/Secretary &  General Counsel

Witness
/s/ Sarah Snyder
    Sarah Snyder
    Print Name

Witness
/s/ Kathy Corum
    Kathy Corum
    Print Name

STATE OF KENTUCKY)
                    )SS.
COUNTY OF JEFFERSON)

     The  foregoing  instrument was acknowledged before  me  this
10th  day  of  August,  2000,  by  Gregory  A  Compton,  as  Vice
President/Secretary and General Counsel of Tumbleweed,  Inc.,  on
behalf of said corporation.

                          /s/ Lisa Hall Cinffin
                            Notary Public /s/ commission expires  4-27-2003

          [Remainder of page intentionally left blank]

                    LESSOR:

                               AEI INCOME & GROWTH FUND 23 LLC

                               By:  AEI Fund Management XXI, Inc.

Witness
/s/ Michael B Daugherty        By:/s/ Robert P Johnson
    Michael B Daugherty               Robert P. Johnson,
                                      President
    Print Name

Witness
/s/ Ann M Feucht
    Ann M Feucht
    Print Name

STATE OF MINNESOTA  )
                                   )SS.
COUNTY OF RAMSEY    )

     The foregoing instrument was acknowledged before me the 23rd
day  of  August, 2000, by Robert P Johnson, the President of  AEI
Fund  Management  XXI,  Inc., a Minnesota corporation,  corporate
general partner of AEI Income & Growth Fund 23 LLC, on behalf  of
said limited partnership.

                              /s/ Barbara J Kochevar
                              Notary Public

                                                   [notary seal]

LEASE AMENDMENT, TUMBLEWEED, KETTERING, OHIO

                        LEGAL DESCRIPTION

Situate in the City of Kettering, County of Montgomery, State of
Ohio, and being Lot 1 Kettering Towne Center Section 1 as
recorded in Plat Book 177, Page 19 of the Plat Records of
Montgomery County, Ohio.

Together with non-exclusive rights of ingress and egress and
parking as set forth in Cross Easement Agreement by and between
Center-Plex Venture and AEI Income & Growth Fund 23 LLC dated 23
August, 2000.

Subject to all Easements, covenants, conditions, agreements and
restrictions of record.EXHIBIT 10.5

                               INCUBATE THIS! INC.

                            ADVISORY BOARD AGREEMENT

                  ADVISORY BOARD AGREEMENT made as of this 12th day of May, 2000
by and between INCUBATE THIS! INC., a Colorado corporation,  having an office at
265 Sunrise Avenue, Suite 204, Palm Beach,  Florida 33480 (hereinafter  referred
to as "Incubate")  and DR. RON DAISY,  an individual,  with an address at Aharon
Katziz 1/5, Israel (hereinafter referred to as "DAISY").

                              W I T N E S S E T H:

         WHEREAS, Incubate desires to retain DAISY for its advisory board; and

         WHEREAS,  DAISY is willing to serve on the  advisory  board of Incubate
upon the terms and conditions herein set forth;

         NOW,  THEREFORE,  in consideration of the promises and mutual covenants
herein set forth it is agreed as follows:

         1. Retain DAISY as Advisory Board Member. Incubate hereby retains DAISY
to serve  on its  advisory  board  until  removed  by the  Board or until  DAISY
resigns.

         2. Duties.  DAISY shall perform those functions  generally performed by
persons of such title and  position,  shall  attend all meetings of the Advisory
Board and shall  perform any and all  related  duties and shall have any and all
powers as may be prescribed by  resolution of the Advisory  Board,  and shall be
available to confer and consult  with and advise the  officers and  directors of
Incubate at such times that may be required by Incubate.

         3. Compensation.   Daisy  shall  receive  nonrefundable compensation of
25,000 shares of the Restricted  Common Stock of the Company upon  completion of
six (six) months of duty hereunder.

         4. Expenses.   DAISY  shall  submit  to  Incubate  reasonably  detailed
receipts with respect thereto which  substantiate  DAISY's  expenses,  including
expenses to attend all advisory  board  meetings and  Incubate  shall  reimburse
DAISY for all reasonable documented expenses.

         5. Secrecy.  At no time shall DAISY disclose to anyone any confidential
or secret  information (not already  constituting  information  available to the
public)  concerning (a) internal affairs or proprietary  business  operations of
Incubate or its affiliates or (b) any trade secrets,  new product  developments,
patents, programs or programming, especially unique processes or methods.

<PAGE>

         6.  Termination.

               a. Termination by Incubate

                (i) Incubate may terminate this Agreement immediately for Cause.
For purposes  hereof,  "Cause"  shall mean (A) the  conviction  of DAISY for the
commission of a felony  against the Incubate;  and/or (B) the habitual  abuse of
alcohol or  controlled  substances.  In no event shall alleged  incompetence  of
DAISY in the performance of DAISY's duties be deemed grounds for termination for
Cause.

                (ii) This agreement automatically shall terminate upon the death
of DAISY,  except that  DAISY's  estate  shall be entitled to receive any amount
accrued  under  Section 3 for the period  prior to  DAISY's  death and any other
amount to which DAISY was entitled of the time at his death.

         7. Arbitration. Any controversies between Incubate and  DAISY involving
the construction or application of any of the terms, provisions or conditions of
this Agreement  shall on the written request of either party served on the other
be submitted to arbitration.  Such arbitration shall comply with and be governed
by the rules of the American Arbitration Association. An arbitration demand must
be made within one (1) year of the date on which the party demanding arbitration
first had notice of the existence of the claim to be arbitrated, or the right to
arbitration  along with such claim shall be considered  to have been waived.  An
arbitrator  shall  be  selected  according  to the  procedures  of the  American
Arbitration  Association.  The cost of arbitration  shall be borne by the losing
party unless the arbitrator shall determine otherwise. The arbitrator shall have
no authority to add to, subtract from or otherwise modify the provisions of this
Agreement, or to award punitive damages to either party.

         8. Attorneys' Fees and Costs.  If  any  action  at  law or in equity is
necessary to enforce or interpret the terms of this  Agreement,  the  prevailing
party shall be entitled  to  reasonable  attorney's  fees,  costs and  necessary
disbursements in addition to any other relief to which he may be entitled.

         9. Entire  Agreement;  Survival.  This  Agreement  contains  the entire
agreement  between the parties  with  respect to the  transactions  contemplated
herein and  supersedes,  effective as of the date hereof any prior  agreement or
understanding  between Incubate and DAISY with respect to DAISY's  employment by
Incubate.  The  unenforceability  of any provision of this  Agreement  shall not
effect the  enforceability  of any other  provision.  This  Agreement may not be
amended  except by an agreement in writing signed by the DAISY and the Incubate,
or any waiver, change, discharge or modification as sought. Waiver of or failure
to exercise any rights  provided by this  Agreement and in any respect shall not
be deemed a waiver of any  further  or future  rights.  The  provisions  of this
Agreement shall survive the termination of this Agreement.

         10. Assignment. This Agreement shall not be assigned to  other parties.

         11. Governing  Law.  This  Agreement and all the amendments hereof, and
waivers and consents with respect thereto shall be governed by the internal laws
of the State of Florida,  without  regard to the  conflicts  of laws  principles
thereof.

<PAGE>

         12. Notices.  All  notices,  responses,  demands or other communication
under this Agreement  shall be in writing and shall be deemed to have been given
when

               a. delivered by hand;
               b. sent be telex or telefax, (with receipt confirmed), provided
that a copy is mailed by registered or certified mail, return receipt requested;
or

               c. received by the addressee as sent by express delivery service
(receipt requested) in each case to the appropriate addresses, telex numbers and
telefax  numbers  as the  party may  designate  to itself by notice to the other
parties:

<TABLE>
<S>                 <C>                         <C>      <C>
(i) if to Incubate: INCUBATE THIS! INC.         Copy to: Donald F. Mintmire,Esq.
                    Attn: Sharone Perlstein              Mintmire & Associates
                    265 Sunrise Avenue, Suite 204        265 Sunrise Avenue, Suite 204
                    Palm Beach, Florida 33480            Palm Beach, FL 33480
                    Telefax: (561) 659-5371              Telefax: (561) 659-5371
                    Telephone:(561) 832-5696             Telephone: (561) 832-5696

(ii) if to DAISY:   Dr. Ron Daisy
                    Aharon Katziz 1/5, Israel
                    Telefax:
                    Telephone:
</TABLE>

         13. Severability of Agreement.  Should  any  part of this Agreement for
any  reason be  declared  invalid  by a court of  competent  jurisdiction,  such
decision shall not affect the validity of any remaining portion, which remaining
provisions  shall remain in full force and effect as if this  Agreement had been
executed with the invalid portion thereof eliminated,  and it is hereby declared
the  intention  of the  parties  that they would  have  executed  the  remaining
portions of this Agreement  without  including any such part,  parts or portions
which may, for any reason, be hereafter declared invalid.

         14. Prior Agreements.  Any  prior  agreements  between the parties with
respect to this same subject matter is null and void nunc pro tunc.

         IN WITNESS WHEREOF, the  undersigned have  executed  this  agreement as
of the day and year first above written.

ATTEST:                                      INCUBATE THIS! INC.

By:                                          By: /s/ Sharone Perlstein
--------------------------                   -------------------------
                                             Sharone Perlstein
                                             President

WITNESS:

By:                                          By: /s/ Dr. Ron Daisy
--------------------------                   ------------------------
                                             Dr. Ron Daisy

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