Document:

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                                                                   Exhibit 10.26

May 18, 2004

Arlington Inns, Inc. (f/k/a Amerihost Inns, Inc.)
c/o Arlington Hospitality, Inc. (f/k/a Amerihost Properties, Inc.)
2355 South Arlington Heights Road
Suite 400
Arlington Heights, Illinois 60005
Attention:  Jerry H. Herman, President

                      RE: Temporary Sales Letter Agreement

Gentlemen:

     Reference is made to that certain Amended and Restated Master Agreement
dated as of January 24, 2001, between PMC Commercial Trust and its subsidiaries
(collectively "LESSOR") and Arlington Hospitality, Inc. ("ARLINGTON") and
Arlington Inns, Inc. (the "LESSEE") which agreement was amended by the parties
thereto pursuant to that certain First Amendment to Amended and Restated Master
Agreement dated as of May 25, 2001 and that certain Second Amendment to Amended
and Restated Master Agreement dated as of June 4, 2003 (the Amended and Restated
Master Agreement as so amended herein called the "MASTER AGREEMENT").
Capitalized terms used but not otherwise defined herein shall have the meaning
set forth in the Master Agreement.

Lessor hereby agrees to amend certain portions of Article X of the Master
Agreement entitled Property Purchases as follows:

     1.   Article 10.4 of the Master Agreement is deleted in its entirety and
          the following substituted in lieu thereof:

          10.4 Fourth Purchase. Lessee and Lessor have agreed that Lessee shall
               have the option to purchase the AmeriHost Inn, Port Huron,
               Michigan (the "FOURTH SELECTION") as the Lessee's and Lessor's
               fourth (and final) purchase option (the "FOURTH PURCHASE OPTION")
               to be closed by October 31, 2004 (the "OUTSIDE CLOSING DATE").
               There will be no further purchase options under this Agreement.

          (a)  Pending the completion of the closing of the Fourth Purchase
               Option, the Base Rent increase set forth in Section 3.2 of this
               Agreement effective June 30, 2004 will be suspended and not go
               into effect. If the closing of the Fourth Purchase Option by
               Lessee occurs on or before the Outside Closing Date, the Base
               Rent increase set forth in said Section 3.2 effective June 30,
               2004 will not go into effect and shall be null and void. If the
               closing of the Fourth Purchase Option does not occur on or before

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Arlington Inns, Inc. (f/k/a Amerihost Inns, Inc.)
c/o Arlington Hospitality, Inc. (f/k/a Amerihost Properties, Inc.)
May 13, 2004
Page 2

               the Outside Closing Date, the suspension of the June 30, 2004
               Base Rent increase shall be rescinded and the Base Rent increase
               shall be deemed to have gone in effect as of June 30, 2004.
               Lessee shall pay to Lessor on the next regularly scheduled rental
               payment date all additional Base Rent due as a result of the Base
               Rent increase effective as of June 30, 2004 and shall henceforth
               pay Base Rent at the increased rental rate.

     2.   The following is added to the end of Section 10.6:

          Anything in Article 10.6 of the Master Agreement to the contrary
          notwithstanding, the following provisions shall apply with respect to
          the purchase/sale of the AmeriHost Inn - Port Huron, Michigan ("PORT
          HURON"), the Amerihost Inn - Storm Lake, Iowa and the AmeriHost Inn -
          Eagles Landing, Georgia (collectively "DESIGNATED HOTELS"). Upon the
          sale of any of the Designated Hotels, Lessor shall be paid the sum of
          the following: (a) the sale proceeds, after payment of closing fees,
          broker fees, commissions, title premiums, recording fees, prepayment
          penalties on related debt of the Lessor, if any, assumption fees, or
          any tax or taxes levied by any local or state taxing authority (the
          "NET SALES PROCEEDS") and (b) an amount equal to the incremental fee
          payable to Lessee and/or Arlington pursuant to the terms of that
          certain Development Agreement by and among, inter alia, Arlington,
          Lessee and Cendant Finance Holding Corporation, dated September 30,
          2000 (the "ARLINGTON FEE AMOUNT"), which Arlington Fee Amount will be
          paid to Lessor within 45 days after the closing of the sale of the
          Designated Hotel. In addition, upon such closing, the portion of the
          Escrow Funds allocated to the Designated Hotel sold (the "DESIGNATED
          ESCROW FUNDS") shall be released to Lessor. The Net Sales Proceeds,
          the Arlington Fee Amount (to the extent actually received by Lessor)
          and the Designated Escrow Funds are collectively called the "TOTAL
          PROCEEDS" and shall be calculated by Lessor in connection with any
          sale of a Designated Hotel. If the amount of the Total Proceeds for
          any Designated Hotel exceeds the Assigned Value (herein so called) for
          such Hotel as reflected on Exhibit E attached hereto ("PROCEEDS
          EXCESS"), the amount of any such Proceeds Excess shall be applied as
          follows: (a) if as of the closing of such sale, there exists a
          Proceeds Deficit (as hereinafter defined), the Proceeds Excess will be
          applied by Lessor (i) first, to reduce any existing Proceeds Deficit
          amount, (ii) second, if Port Huron has not been sold, to reduce the
          Assigned Value of Port Huron and (iii) third, if Port Huron has been
          sold, applied pro-rata to the Assigned Value of the remaining Hotels
          (including any remaining un-sold Designated Hotels) and (b) if as of
          the closing of such sale, there exists no Proceeds Deficit, and Port
          Huron has not been sold, Lessor will apply the Proceeds Excess to
          reduce the Assigned Value of Port Huron. As used herein, the term
          "PROCEEDS DEFICIT" with respect to any Hotel, shall mean an amount
          equal to the deficit between the amount of the

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Arlington Inns, Inc. (f/k/a Amerihost Inns, Inc.)
c/o Arlington Hospitality, Inc. (f/k/a Amerihost Properties, Inc.)
May 13, 2004
Page 3

          Total Proceeds for a Hotel and the Assigned Value for such Hotel. All
          Proceeds Deficits shall become the absolute and immediate obligation
          of Arlington (separate and distinct from any obligation of Arlington
          under the Master Agreement) and shall bear interest at the annual rate
          of 8.5% from and after the date created, and to the extent any balance
          remains as of the Outside Closing Date (and after the application of
          the Total Proceeds as set forth above), Arlington promises to pay such
          balance in full (including all interest accrued thereon) upon the
          earlier of (i) a default by Lessee and/or Arlington in the performance
          of its obligations under the Master Agreement, under this letter
          agreement or under any other documents between Lessor, Lessee,
          Arlington and/or their respective affiliates, or (b) May 1, 2005.

     3.   With regard to the Designated Hotels, the terms of the second sentence
          of Section 10.8 shall not be applicable; instead, upon any sale of a
          Designated Hotel, 100% of the combined Capital Expenditure Reserve
          Account and the FF&E Reserve Account for such Hotel shall be applied
          pro rata to such accounts for the Hotels listed on the attached
          Schedule 1.

     4.   Lessee hereby recommends the sale of (a) the AmeriHost Inn hotel
          located in Storm Lake, Iowa at a gross sales price of $2,700,000, (b)
          the AmeriHost Inn hotel located in Eagles Landing, Georgia at a gross
          sales price of $2,275,000 and (b) the AmeriHost Inn hotel located in
          Port Huron, Michigan at a gross sales price of $1,820,000. Lessor
          hereby approves the recommended sale prices set forth in the previous
          sentence (the "PROPOSED SALES PRICES"). Lessor acknowledges that these
          are proposals only and the gross sale price of each of these Hotels is
          subject to change in connection with the negotiation of the sales of
          the Hotels. If such a change to any of the Proposed Sales Prices
          occurs, Lessee will notify Lessor of such change and such change shall
          be subject to the approval of Lessor.

     Please indicate your acceptance of the terms hereof by signing a copy of
this letter in the space provided below and returning one executed counterpart
to Jan F. Salit of PMC Commercial Trust.

                                      Very truly yours,

                                      PMC COMMERCIAL TRUST

                                      By:   /s/ Jan F. Salit
                                            ----------------------------------
                                      Name: Jan F. Salit
                                            ----------------------------------
                                      Title: Executive Vice President
                                            ----------------------------------

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Arlington Inns, Inc. (f/k/a Amerihost Inns, Inc.)
c/o Arlington Hospitality, Inc. (f/k/a Amerihost Properties, Inc.)
May 13, 2004
Page 4

ACCEPTED AND AGREED THIS 18TH DAY OF
MAY, 2004:

ARLINGTON INNS, INC. (f/k/a Amerihost Inns, Inc.)

By:    /s/Jerry H. Herman
          ------------------------------------
       Name: Jerry H. Herman
             ---------------------------------
       Title: President
             ---------------------------------

By:    /s/ James B. Dale
       ---------------------------------------
       Name: James B. Dale
             ---------------------------------
       Title: Secretary
             ---------------------------------

ARLINGTON HOSPITALITY, INC. (f/k/a Amerihost Properties, Inc.)

By:    /s/ Jerry H. Herman
       ---------------------------------------
       Name: Jerry H. Herman
             ---------------------------------
       Title: President
             ---------------------------------

By:    /s/ James B. Dale
       ---------------------------------------
       Name: James B. Dale
             ---------------------------------
       Title: Secretary
             ---------------------------------

<PAGE>

                                   SCHEDULE 1

                                 LIST OF HOTELS

1.       AmeriHost Inn - Ashland, Ohio

2.       AmeriHost Inn - Coopersville, Michigan

3.       AmeriHost Inn - Grand Rapids-N, Michigan

4.       AmeriHost Inn - Grand Rapids-S, Michigan

5.       AmeriHost Inn - Jackson, Tennessee

6.       AmeriHost Inn - McKinney, Texas

7.       AmeriHost Inn - Monroe, Michigan

8.       AmeriHost Inn - Mosinee, Wisconsin

9.       AmeriHost Inn - Mt. Pleasant, Iowa

10.      AmeriHost Inn - Rochelle, Illinois

11.      AmeriHost Inn - Smyrna, Georgia

12.      AmeriHost Inn - Tupelo, Mississippi

13.      AmeriHost Inn - Wooster-E, Ohio

14.      AmeriHost Inn - Wooster-N, Ohio

                             Schedule 1 - Solo Page<PAGE>

                                                                    EXHIBIT 10.1

                AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

This agreement (the " Restated Agreement") is entered into by and between Cell
Robotics International, Inc. (the "Company") and F.A. Voight & Associates (the
"Lender"), (the "Parties") as of July 2, 2004.

WHEREAS, the Parties entered into that certain Loan and Security Agreement dated
August 29, 2003 (the "Agreement") under which the Lender has extended loans to
the Company aggregating to date $750,000; and

WHEREAS, the Company requires further working capital in order to implement its
business plan which calls for the commercial launch of its proprietary laser
medical and research products in several key markets; and

WHEREAS, the Lender is a significant shareholder of the Company and is fully
familiar with its business strategy and desires to provide this further
assistance to the Company and

WHEREAS, the Lender understands that funds being provided to Company are
significant to its continuing operations and will specifically serve as a bridge
funding source leading to what the Parties anticipate will be a substantial
equity source of funding.

NOW THEREFORE intending to be legally bound the parties hereto do agree as
follows:

<PAGE>

1. Extension of Credit. The Lender hereby agrees to extend credit to the Company
in the new maximum amount of $1,000,000. Since $750,000 is outstanding under
this Facility, the amount of new funding shall be $250,000. This amount shall be
provided to the Company by the next business day following the execution hereof.
Following the funding of this new advance, the Total Advances outstanding under
the Facility shall be $1,000,000.

2. Term of the Facility: The Facility must be retired fully by December 31,
2004. The Company agrees to repay $250,000 of the amount owed under the Facility
on or before July 22, 2004 or within five (5) days of receipt by the Company of
proceeds from the sale of equity of at least $1,000,000. The Company further
agrees to repay additional Facility obligation within thirty (30) days of
receiving additional proceeds beyond $1,000,000 from the sale of equity at the
rate of $250,000 for each $1,000,000 of additional equity proceeds or on such
other schedule as the Company advises within fifteen (15) days following receipt
of equity funds in excess of $1,000,000 by providing a written retirement
schedule.

3. Fees: The Company shall issue to the Lender (a) 25,000 shares of its
restricted common stock and (b) 85,000 shares of its restricted common stock as
an Extension, Origination and Guarantee Fee upon the execution of this Restated
Agreement. The restricted shares shall be subject to Rule 144 requirements and
shall not be registered for resale by the Company.

4. Interest. The Company further agrees to pay to the Lender as interest for the
Total Advances, an amount equal to two per cent (2.00% ) for every 30 day period
that the Total Advances have been outstanding. This interest shall be paid
together with principal when any amount of Facility obligation is retired and in
no event later than December 31, 2004. The Parties acknowledge that there will
be due and owing to the Lender interest to July 1, 2004 of $52,500. This amount
shall be deducted from the further advance of $250,000 to produce a net new
advance of $197,500.

5. Promissory Notes. The Company shall execute one or more promissory notes in
the form attached hereto as Exhibit "A".

<PAGE>

6. Security Interest. The underlying collateral for the Total Advances made to
the Company under the terms of this Agreement shall be existing and future
accounts receivable, inventory, purchase orders, and the intellectual property
related to the Work Station Product Line ("Work Station IP") and the UltraLight
product line ("UltraLight IP"). The lien granted on the Work Station IP and
UltraLight IP shall entitle the Lender in the event of default hereunder, in the
exercise of its reasonable commercial judgment, to sell or license the Work
Station IP and/or the UltraLight IP. When the Company shall have fully repaid
all amounts owed under this Facility, the Lender shall forthwith release its
first security lien on the above described assets of the Company and the
Facility shall be terminated.

7. Additional Consideration. The Lender shall receive as additional
consideration Warrants to purchase common shares of the Company in the form
attached hereto as Exhibit "B" for (a) 200,000 shares, provided that the net
additional advance is received by the Company within one business day of the
execution of this Agreement and (b) 100,000 shares in further consideration for
the extension of maturity and the accruing of interest. The common stock
underlying the Warrants shall be registered on Form SB2 or similar registration
statement with the SEC within 180 days of the Lender's exercise of the Warrants.
The Warrants shall be valid for a period of three years from the date of
issuance and shall have an exercise price of thirty seven and one half cents per
share ($0.375).

8. Conversion of Facility Debt to Equity. At any time while any amount is owed
under this Facility and for a period of fifteen (15) days after the tender of
any payment of Facility obligation, the Lender shall be entitled to request that
shares of common stock be issued in exchange for cash payment of not more than
$250,000 of Facility obligation at the rate of one share of the Company's common
stock for every thirty cents ($0.30) of obligation hereunder. This conversion
formula shall be subject to adjustment in the event of any stock splits or other
adjustments made to the Company's common stock so that the Lender receives an
equivalent rate of conversion. The shares issued pursuant to this right of
conversion shall be restricted shares, subject to Rule 144 requirements and
shall not be registered for resale by the Company.

<PAGE>

9. Communication with Lender. The Company agrees as a condition of this Facility
and so long as any amount is owed hereunder to appoint Frederick A. Voight as a
Board Advisor and to provide periodic and timely reports on its cash position,
cash management, and marketing and strategic planning to the Lender on a
confidential basis in a format and manner to be mutually agreed upon.

10. Entire Agreement, Amendments. This is the entire Restated Agreement of the
parties relating to this subject matter. It is to be governed by the laws of the
State of New Mexico and shall be enforced in the state or federal courts of the
State of New Mexico if the parties cannot amicably resolve any disputes by
voluntary submission to an agreed upon mediator or arbitration mechanism. This
Restated Agreement may be modified only by a writing signed by the parties.

11. Agreement in Counterparts. The Company and Lender recognize the importance
of expediency. This Restated Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original and all of which
together shall be deemed to be one and the same instrument.

WITNESS THE HAND AND SEAL OF THE PARTIES AS OF THE DATE FIRST ABOVE WRITTEN:

CELL ROBOTICS INTERNATIONAL, INC.

    /s/ Eutimio L. Sena
-----------------------------------------
By: Eutimio L. Sena, President and Chief
    Executive Officer

F. A. VOIGHT & ASSOCIATES

    /s/ Frederick A. Voight
-----------------------------------------
By: Frederick A. Voight, President

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