Document:

<PAGE>

                                                                     EXHIBIT 4.6

                           SHORT TERM PROMISSORY NOTE

US $60,000.00                                                   November 3, 2004

         FOR VALUE RECEIVED, Voyager One, Inc. promises to pay to the order of
Castle Hill Advisory Group at such place as the holder of this Note may from
time to time designate, the principle sum of Sixty Thousand and 00/100
(US$60,000.00) together with simple interest from the date hereof at the rate of
six percent (6) per annum on the principal balance.

         A one installment payment will be due sixty (60) calendar days from the
day when Voyager One, Inc. receives free and clear funds from the holder of the
note.

         All payments on account of the indebtedness evidenced by this note
shall be first applied to interest in the unpaid principal balance and the
remainder to principal.

         All parties to this note severally waive presentment for payment,
notice of dishonor, protest and notice of protest.

Voyager One, Inc.                                  Sebastien C. DuFort
859 West End Court
Suite I                                            By: /S/ SEBASTIEN C  DUFORT
                                                       ----------------------
Vernon Hills, IL   60061                                 Signature & Date
Phone:    847-984-6200
Fax:      847-984-6201

By: /S/ JOHN A  LICHTER  11-3-04
    -----------------------------
        Signature & Date
        John A. Lichter
        CEO

<PAGE>

                                   CONSENT TO
                  AMENDMENT OF SHORT TERM PROMISSORY NOTE DATED
                                NOVEMBER 3, 2004

         FOR VALUE RECEIVED, the undersigned, Castle Hill Advisory Group and
Voyager One, Inc., a Nevada corporation, hereby consent to an Amendment of the
terms of the Short Term Promissory Note dated November 3, 2004, attached as
Exhibit A hereto, as follows:

     1. The installment payment due date is hereby extended from January 4, 2005
     to March 31, 2005.

     2. This Consent is effective January 4, 2005 regardless of when it is
     signed. The remaining terms of the original note dated November 3, 2004
     shall remain in full force and effect.

                  "Payor"                            "Payee"

Name:             Voyager One. Inc.                  Castle Hill Advisory Group
Address: 859 West End Court
                  Vernon Hills, IL   60061
Phone             847-984-6200
Fax               847-984-6201

                  By: /S/ JOHN A. LICHTER 1-4-05     By: /S/ SEBASTIEN C. DUFORT
                      --------------------------         -----------------------
                      Signature & Date                   Signature & Date
                      John A. Lichter                    Sebastien C. DuFort
                      CEO                                President

<PAGE>

                                   CONSENT TO
              SECOND AMENDMENT OF SHORT TERM PROMISSORY NOTE DATED
                                NOVEMBER 3, 2004

     The undersigned, Castle Hill Advisory Group and Voyager One, Inc., a Nevada
corporation, hereby consent to a Second Amendment of the terms of the Short Term
Promissory Note dated November 3, 2004:

1. The payment due date is hereby extended from March 31, 2005 to July 31, 2005.

2. The promissory note is amended on its face to change the principal amount
from $60,000 to $50,000 to reflect the amount of funds actually received.

3. This Consent is effective March 24, 2005 regardless of when it is signed. The
remaining terms of the original note dated November 3, 2004 shall remain in full
force and effect.

           "Payee"

Name:      Castle Hill Advisory Group
Address:   433 S. Washington St.
           Hinsdale, IL   60521

Phone      630-546-6672
Fax        630-321-0872

           By: /S/ Sebastien C. DuFort
              --------------------------
                   Signature and Date
                   Sebastien C. DuFort
                   Managing Director<PAGE>

                                                                     EXHIBIT 4.7

Voyager One, Inc.
859 West End Court - Suite I
Vernon Hills, IL 60061
Phone: (847) 984-6200
Fax: (847) 984-6201

December 31, 2004                                       HAND DELIVERED
                                                        --------------

Mr. John Lichter
President/CEO
Quest Manufacturing, Inc.
2503 Spring Ridge Drive
Unit F
P.O. Box 430
Spring Grove, IL  60081

RE:  Repayment of proceeds pursuant to Asset Purchase Agreement

Dear Mr. Lichter:

Pursuant to Paragraph 5(b)(2) of the Asset Purchase Agreement between Quest
Manufacturing, Inc. and Silicon Film Technologies, Incorporated, dated February
1, 2003, the outstanding balance of $305,000 is to be payable to Quest
Manufacturing, Inc no later than December 31, 2004. This unpaid balance has
accrued interest at 6% per annum. This will confirm that you have agreed, on
behalf of Quest Manufacturing, Inc. to extend the payment date to March 31,
2005. The outstanding balance will continue to accrue interest at the rate of
six percent (6%) per annum. Please confirm this agreement by signing and dating
this letter below.

Very truly yours,

/s/ Sebastien C. DuFort

Sebastien DuFort
President
Voyager One, Inc.

I, John Lichter, President and CEO of Quest Manufacturing, Inc., hereby confirm
that I have extended the payment due date of outstanding funds of $305,000 plus
interest as indicated above to March 31, 2005

 12/31/04                    /s/ John Lichter
----------------            -----------------------------
Date                                John Lichter
                                    President/CEO
                                    Quest Manufacturing

SD/cap

<PAGE>

Quest Manufacturing, Inc.
2503 Spring Ridge Drive
Unit F
P.O. Box 430
Spring Grove, IL  60081

March 23, 2005                                         HAND DELIVERED
                                                       --------------

Mr. Sebastien DuFort
President Voyager One, Inc.
859 West End Court-Suite I
Vernon Hills, IL 60061

RE: Repayment of proceeds pursuant to Asset Purchase Agreement

Dear Mr. DuFort:

This will confirm that I have agreed, on behalf of Quest Manufacturing, Inc.
(Quest), to extend the payment date of the outstanding balance of $305,000 owed
Quest pursuant to paragraph 5(b)(2) of the Asset Purchase Agreement dated
February 1, 2003 from March 31, 2005 to July 31, 2005. This unpaid balance has
accrued interest at 6% per annum. You have agreed that the outstanding balance
will continue to accrue interest at the rate of six percent (6%) per annum.

Very truly yours,

/S/ John A. Lichter

John Lichter
President/CEO
Quest Manufacturing, Inc.<PAGE>

                                                                     EXHIBIT 4.8

                           SHORT TERM PROMISSORY NOTE

US$25,000.00                                               February 1, 2005

     FOR VALUE RECEIVED, Voyager One, Inc. promises to pay to the order of
Castle Hill Advisory Group at such place as the holder of this Note may from
time to time designate, the principal sum of twenty five thousand and 00/100
(US$25,000.00) together with simple interest from the date funds are received by
Voyager One, Inc. at the rate of six percent (6) per annum on the principal
balance.

     The note matures and becomes due March 31, 2005. The amount of the payment
shall be an amount equal to the outstanding principal and unpaid interest.

     All payments on account of the indebtedness evidenced by this note shall be
first applied to interest on the unpaid principal balance and the remainder to
principal.

     All parties to this note severally waive presentment for payment, notice of
dishonor, protest and notice of protest.

Voyager One, Inc.                                  Sebastien C. DuFort
859 West End Court
Suite I                                            BY: /S/ Sebastien C. DuFort
Vernon Hills, IL 60061                                 -------------------------
Phone: 847-984-6200                                       SIGNATURE & DATE
Fax: 847-984-6201

BY: /S/ John A. Lichter 2/1/05
    --------------------------
        SIGNATURE & DATE
        JOHN A. LICHTER
        CEO

<PAGE>

                                   CONSENT TO
                  AMENDMENT OF SHORT TERM PROMISSORY NOTE DATED
                                FEBRUARY 1, 2005

     FOR VALUE RECEIVED, the undersigned, Castle Hill Advisory Group and Voyager
One, Inc., a Nevada corporation, hereby consent to an Amendment of the terms of
the Short Term Promissory Note dated February 1, 2005 as follows:

     1. The installment payment due date is hereby extended from March 31, 2005
     to July 31, 2005.

     2. This Consent is effective March 27, 2005 regardless of when it is
     signed. The remaining terms of the original note dated February 1, 2005
     shall remain in full force and effect.

           "Payee"

Name:      Castle Hill Advisory Group
Address:   433 S. Washington St.
           Hinsdale IL 60521
Phone      630-546-6672
Fax        630-321-0872

           By: /S/ Sebastien C. DuFort
              --------------------------
                   Signature and Date
                   Sebastien C. DuFort
                   Managing Director<PAGE>

                                                                    EXHIBIT 10.1

        Letter of Agreement between Voyager One, Inc. and CMI Capital LLC

<PAGE>

July 15, 2004

Mr. John Lichter
Voyager One, Inc.
859 West End Court
Suite I
Vernon Hills, IL 60061

Dear John:

CMI Capital, LLC understands that Voyager One, Inc. is seeking a strategic
partner, strategic alliances, merger and acquisition candidates and consulting
services. Voyager One, Inc. wishes to engage CMI Capital, LLC and CMI Capital,
LLC desires to assist Voyager One, Inc. with respect to these transactions. A
suitable transaction is one that is accepted by Voyager One, Inc. based on the
following terms:

1.       CMI Capital, LLC will use its best efforts to introduce Voyager One,
         Inc. to potential sources for the transaction, on both a domestic and
         international basis (the "Transaction Source"). The terms of any
         transaction shall be as negotiated between Voyager One, Inc. and the
         Transaction Source, with no assistance by CMI Capital, LLC in effecting
         any transaction(s). CMI Capital, LLC cannot guarantee a successful
         conclusion to the negotiations with any such sources. CMI Capital, LLC
         represents that no actions taken by it pursuant to this agreement shall
         cause CMI Capital, LLC to be required to be registered as a
         broker-dealer with the SEC, NASD, or any applicable State agency.

2.       In order to better enable Voyager One, Inc. to accomplish the
         transaction, CMI Capital, LLC will assist Voyager One, Inc. by
         establishing and maintaining a list of parties who are prospective
         Transaction Sources and review such list with Voyager One, Inc. as
         required.

In connection with this agreement, Voyager One, Inc. represents and warrants
that all information given to CMI Capital, LLC, shall be complete and correct in
all material respects, to the best of Voyager One, Inc.'s knowledge, information
and belief.

3.       In consideration of the foregoing:

         (a)      Voyager One, Inc. shall pay and/or reimburse to CMI Capital,
                  LLC promptly any out-of-pocket costs reasonably incurred by
                  CMI Capital, LLC with respect to this agreement, provided that
                  such out-of-pocket costs (individually or in the aggregate) in
                  excess of Voyager One, Inc. approves $50 in advance.

         (b)      CMI Capital, LLC shall receive upon the execution of this
                  agreement a warrant to purchase 666,666 shares of Voyager
                  One's common stock at an exercise price of $0.25 per share.
                  CMI Capital, LLC shall be restricted from exercising the
                  warrant until January 15, 2005 and the warrant shall expire on
                  January 15, 2010. Voyager One, Inc. will register the
                  underlying shares by July 15, 2005 and grants to CMI Capital,
                  LLC unlimited piggyback registration rights.

<PAGE>

July 15, 2004

Mr. John Lichter
Page 2

4.       This engagement may be terminated by either party at any time after 90
         (ninety) days, by written notice. Provided however paragraph (3b)
         remains in effect. CMI Capital, LLC agrees at such termination to
         furnish Voyager One, Inc. a list of sources brought in during the time
         of this engagement.

5.       Voyager One, Inc. shall indemnify and hold harmless CMI Capital, LLC to
         the full extent permitted by law from and against all claims, damages,
         losses and liabilities (including, without limitation, reasonable
         attorneys' fees and expenses) arising out of or based upon this
         engagement or any transaction, including without limitation, any
         misstatement or omission, or alleged misstatement or omission, in any
         offering memorandum or any other materials supplied or approved by
         Voyager One, Inc.. CMI Capital, LLC also agrees to indemnify and hold
         harmless Voyager One, Inc. under the same terms and conditions,
         including any issues or claims arising out of CMI Capital, LLC's status
         with the NASD, SEC, or any State agencies.

6.       In the unlikely event that any legal action may be instituted with
         respect to this engagement, such action shall only be instituted in a
         court in the County of Orange, State of California, which court shall
         have venue of a jurisdiction over any such action, and the parties
         hereby stipulate to such venue and jurisdiction. With respect to any
         such action, the prevailing party shall be entitled to recover all
         costs of suit, including reasonable attorneys' fees.

7.       This agreement shall inure to the benefit of and be binding upon the
         parties hereto and their successors and assigns.

8.       This agreement supersedes and replaces any previous agreements, whether
         written or verbal between CMI Capital, LLC and Voyager One, Inc.,
         and/or it's subsidiaries or affiliates, including but not limited to
         the agreement dated September 18, 2003 and its amendment dated June 30,
         2004, and any liabilities under such agreements are considered
         satisfied and any rights under such agreements terminated and
         agreements cancelled. The warrant issued in the Amendment To Agreement
         Dated September 18, 2003 is hereby canceled and replaced by the warrant
         referred to in paragraph 3(b) hereinabove.

If the above engagement and agreement relating thereto are acceptable, would you
please execute the acceptance and acknowledgment hereinafter provided.

                                           Very truly yours,
                                           CMI Capital, LLC

Dated:    July 15/04                       By:  Gerry L. Martin
          ----------                            ---------------
                                                Gerry L. Martin
                                                President

ACCEPTANCE AND ACKNOWLEDGMENT: Voyager One, Inc. hereby accepts the above
engagement and agrees to the terms and provisions herein above set forth with
respect to such engagement.

VOYAGER ONE, INC.

Dated:     7/15/04                         By:  John Lichter
           -------                              ------------
                                                John Lichter
                                                CEO

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