Document:

<PAGE>

                                                                   EXHIBIT 10.67

December 6, 1999

Mr. George M. Colin
12345 Main St.
Aliso Viejo, CA 12345

Dear George:

This Agreement summarizes a consulting arrangement between you, ("Colin"), and
Applied Data Communications, Inc. a Delaware corporation ("ADC"), covering the
period from January 1, 2001 through December 31, 2001. Pursuant to the terms of
this Agreement, you are to advise ADC in its financial planning, corporate
business focus, personnel requirements and market penetrations. ADC will
compensate you at the rate of 12,500 shares per month for services rendered
during the term of this Agreement. All shares earned under this Agreement shall
be issued as registered common stock, and shall be issued prior to April 15,
2001.

This Agreement shall commence effective January 1, 2000 and, unless earlier
terminated in accordance with the provisions of this Agreement, shall continue
in full force and effect herein after for a period ending December 31, 2000. In
the event of any material breach of any term or provision of this Agreement by
either party, the other party may cancel this Agreement by giving thirty (30)
day prior written notice thereof; provided, however, that this Agreement shall
not terminate at the end of said thirty (30) days notice period if the party in
breach has cured said breach to the satisfaction of the other party prior to the
expiration of said thirty (30) day period.

You hereby warrant and represent that neither the execution and delivery of this
Agreement nor the performance by you of your obligations thereunder will (I)
contravene any provision contained in its Articles of Incorporation or By-laws
or (ii) violate or result in a breach of or constitute a default under (A) any
contract, agreement, commitment, indenture, mortgage, lien, pledge, note,
license, permit or other instrument or obligation or (B) any judgment, order,
law, rule or regulation or other restriction of any governmental authority, in
each case to which you are a party or by which you are bound or to which any of
your assets or properties are subject.

Under the terms of this Agreement, you shall be deemed to have the status of an
independent contractor, and nothing in this Agreement shall be deemed to place
the parties in the relationship of employer-employee, principal-agent, partners,
or joint venturers. you shall provide under this Agreement the services of only
those personnel who are employees of yours. Personnel supplied by you hereunder
are not ADC's employees or agents and you assumes full responsibility for their
acts. You shall be solely responsible for the payment of compensation of your
employees assigned to perform services hereunder and such employees shall be
informed that they are not entitled to the provision of any ADC employee
benefits. ADC shall not be
<PAGE>

responsible for the payment of worker's compensation, disability benefits or
unemployment insurance or for withholding or paying employment related taxes for
any of your employees, which responsibility shall be solely that of you. In the
event that any government agency, any court or any other applicable entity
determines that the personnel provided by you or any permitted subcontractor or
assignee of you hereunder are employees of ADC for any purpose, you agree to
indemnify and hold ADC harmless from liabilities, costs and expenses (including,
but not limited to, attorneys' fees) associated with the determination.
Notwithstanding any other provisions of the Agreement, you may not contract or
subcontract any work to be performed hereunder without the express written
consent of ADC, any such subcontract or assignment shall include the terms
specified by ADC and the assurances and indemnities required to be provided by
you pursuant to this Agreement.

Your main contacts at ADC will be Walter J. ("Pat") Kane, President and Barry K.
Sugden, Jr., Chief Financial Officer.

Please sign below to indicate your acceptance of this Consulting Agreement.

                              APPLIED DATA COMMUNICATIONS, INC.,
                              a Delaware corporation

Date: 12/6/1999               /s/ Walter J. Kane
                              Water J. ("Pat") Kane, President

AGREED AND ACCEPTED:          George M. Colin

Date: 12/6/99                 /s/ George M. Colin
                              George M. Colin
<PAGE>

                                   AGREEMENT

WHEREAS, Applied Data Communications, Inc. ("ADC" or the "Company") requires
additional financing to capitalize on business opportunities, presently
available to it, and George M. Colin ("Colin") is willing to provide assistance
in facilitating contacts through whom such financing could be made available to
ADC,

NOW THEREFORE, ADC and Colin (collectively "Parties"), in exchange for the
foregoing and other good and valuable consideration, do hereby agree and
covenant as follows:

1. Duties of Colin.
Colin agrees to arrange introductions to sources of potential financing for ADC,
through his personal contacts and such other parties ("Business Associates") as
he deems appropriate for the purposes indicated herein, and to facilitate
negotiations regarding potential financing arrangements, either equity or debt
in nature. Parties shall agree, prior to introduction by Colin to ADC of
potential financing sources, whether such sources are previously known to ADC,
and would be excluded from the terms of this Agreement, for purposes of
compensating Colin.

2. Duties of ADC.
ADC agrees to make available 1) information and documentation regarding Company
activities, and 2) access to members of its management to discuss Company
affairs and plans with potential financing sources arranged by Colin. Such
information, documentation and/or meetings with management will be arranged as
is mutually convenient to the parties.

3. Compensation.
ADC agrees that should Colin, his Business Associates ("Lenders") or family
members elect to provide such financing, as either debt or equity in form, ADC
will provide Colin options ("Options") to purchase registered common stock
("Shares") of ADC, at the rate of one Share for every dollar in financing
provided by financing sources introduced to ADC by Colin. Such Options to
acquire Shares shall carry an exercise price of $.80 per share, and shall have a
life of twenty-four months from March 31, 2001. Options granted hereunder, shall
be subject to a maximum total of 1.5 million options, regardless of total
financing provided.

4. Financing Acceptance.
Acceptance or rejection of financing proposals, whether debt or equity in
nature, arising from contacts introduced by Colin to ADC, shall be at the sole
discretion of ADC.

5. Non Circumvention.
ADC agrees that it will not circumvent Colin regarding negotiations for
financing with parties introduced by Colin to ADC. ADC agrees that it will
advise Colin of all discussions held between the Company and sources introduced
by Colin, and will notify him promptly of any financial transactions effected.
ADC further agrees, that for a period of two years, any subsequent financings it
concludes with parties introduced by Colin, will be subject to provisions
herein.
<PAGE>

6. Legal and Collection Fees.

ADC agrees to compensate Colin for reasonable legal and collection fees, in the
event that legal action is taken by Colin to effect collection of fees and
compensation as provided herein, and claims asserted by Colin for such
compensation are upheld as provided herein.

7. Modification.
Thee terms of this Agreement shall not be varied, altered or modified except in
writing signed by authorized representatives of by ADC and Colin.

8. Jurisdiction, Arbitration.
The provisions of this Agreement are to be construed according to, and are to be
governed by the laws of the State of California.

IN WITNESS WHEREOF, Parties acknowledge their agreement with the aforementioned
terms and conditions, by their signatures, as indicated below.

Applied Data Communications, Inc.
By: /s/ Walter J. Kane                      By: /s/ George M. Colin
Walter J. "Pat" Kane                        George M. Colin

Its: Chief Executive Officer

3324 South Susan Street
Santa Ana, CA 92704

Date: 3/31/01                               Date: 3/31/2001<PAGE>

                                                                   EXHIBIT 10.68

ADC
APPLIED DATA COMMUNICATIONS

May 15, 2001

Mr. William A. Czapar
4640 East La Palma Ave
Anaheim, CA 92807

Dear Mr. Czapar:

Your note agreement with Applied Data Communications, Inc. ("ADC") provides for
the exchange of such note into registered shares of ADC's common stock in
quantity to include all principal, interest and fees, at the rate of one share
for every $.80 of such principal, fees and interest

ADC has been endeavoring to implement such conversion for the past several
weeks.  We have been advised by counsel that the specific shares we anticipated
using for this purpose, would no longer be considered as "registered".  Although
the shares were considered as registered at one time, their reacquisition by an
"affiliate" of ADC, as defined, changes their status to that of unregistered
shares.

Consequently, ADC is currently unable to provide such shares, pursuant to our
obligation to you.  Reflecting on this, and in discussions with Mr. George M.
Colin, an advisor to the company, ADC is offering an alternative conversion
program which we believe will be beneficial to you.

ADC is offering to convert your note into ADC preferred stock, Series B, which
is convertible into common shares, at the rate of 100 shares of common for each
share of the Series B preferred stock, with voting privileges based on the
number of common shares into which the Series B preferred stock is convertible.

As George may have already have advised you, as a further acknowledgment of the
alteration this represents to your agreement, ADC is offering to adjust the
number of Series B preferred shares upward by 20%.  This will provide to you an
additional 20% common shares, over that to which you would otherwise have
received.  ADC will convert such Series B shares to common shares and to
register such shares within the fourth calendar quarter of 2001.

Should you elect not to accept this offer, ADC will provide registered common
shares prior to the end of ADC's fiscal third quarter.

ADC apologizes for the inconvenience this may represent to you, and sincerely
hopes that you will find this to be an acceptable compensation for the
accommodation we are requesting.

Anticipating your continued support, we are enclosing a new certificate for the
appropriate number of Series B shares.  We request that you acknowledge receipt
of such shares, by executing the duplicate copy of this document below, and
returning it to ADC.

Thank you once again for your continued support.

   3324 South Susan  Santa Ana CA 92704  Phone 714.668.5200  Fax 714.668.5229
<PAGE>

Sincerely,

/s/ Walter J. Kane

Walter J. Kane
Chief Executive Officer

AGREED AND ACCEPTED:

(Name)

(Date)
<PAGE>

                                   AGREEMENT

WHEREAS, Applied Data Communications, Inc., ("ADC" or "Borrower") requires
additional financing to capitalize on business opportunities, presently
available to it, and William A. Czapar ("Lender") is willing to provide such
financing ("Borrowing") under terms and conditions as set forth below,

NOW THEREFORE, ADC and Lender (collectively "Parties"), in exchange for the
foregoing and other good and valuable consideration, do hereby agree and
covenant as follows:

1. Amount of Borrowing.
Amount of the Borrowing shall be $300,000.

2. Rate, Fees.
Borrower shall compensate Lender with interest paid monthly, in the amount of 1%
per month, in addition to administrative fees paid monthly, in the amount of 1%
per month.  Lender hereby grants to Borrower the right to pay interest and fees
in registered common shares of the Borrower's stock, valued at $.80 per share,
with said shares to be issued within thirty (30) days of payoff of the note.

Lender well permit Borrower to pay interest and fees in Series B preferred
shares, convertible to common shares at the exchange rate of 100 shares of
common stock for every share of Series B preferred stock.  Such Series B
preferred shares will be adjusted upward to yield 20% more shares of common
stock, should Borrower be unable to provide registered shares in its place.
Lender will permit borrower to convert the note prior to its maturity date,
provided that the number of such shares paid for interest and fees will assume
the note was held to maturity.

3. Term, Prepayment.
The Borrowing shall commence on May 11, 2001 and shall be repayable in its
entirety on November 11, 2001.  Said Borrowing may be repaid in whole or in
part, by the Borrower, without premium or penalty, at any time prior to the
Maturity Date, at the option of the Borrower, provided, however, that the Lender
shall be entitled to retain all options as defined under paragraph 4 hereunder,
regardless of whether borrowing is prepaid.

4. Additional Consideration.
Borrower shall grant Lender options to purchase 375,000 shares of registered
common stock of the Borrower, at a price of' $.80 per common share, such options
being available for a period of twenty-four months, commencing with the date of
this note. Options may not be exercised prior to January 1, 2002.

5. Legal and Collection Fees.
Borrower agrees to compensate Lender for reasonable legal and collection fees
and expense incurred by Lender, in the event that Borrower is unable to repay
Borrowing when due.
<PAGE>

6. Modification.
The terms of this Agreement shall not be varied, altered or modified except in
writing signed by the Borrower and the Lender.

7. Conversion.
Conversion of borrowings as defined hereunder, shall occur on or before November
11, 2001.  Lender agrees to convert principal amount $300,000 to 375,000 shares
of the Borrower's "registered" common stock (price of $.80 per common share).
Lender will permit Borrower to convert said note into Borrower's Series B
preferred shares, convertible to common shares at the exchange rate of 100
shares of common stock for every share of Series B preferred stock.  Such Series
B preferred shares will be adjusted upward to yield 20% more shares of common
stock, adjusted to 450,000 common shares, should Borrower be unable to provide
registered common shares in its place.

Should Lender request conversion of this note to such shares of Series B
preferred stock, prior to maturity of the note, Lender will be entitled to
receive all of such interest and fee shares, per paragraph 2, herein, as/ if
such note were held to maturity.

Total shares, incl. Interest & fees (6 mos.) = 450,000 + 54,000

10. Validity Period.
This Agreement is valid for three weeks from the date hereof. All provisions
herein are subject to renegotiation after June 1, 2001.

11. Jurisdiction, Arbitration.
The provisions of this Agreement are to be construed according to, and are to be
governed by the laws of the State of California.

IN WITNESS WHEREOF, Parties acknowledge their agreement with the aforementioned
terms and conditions, by their signatures, as indicated below.

Applied Date Communications Inc.

By: /s/ Walter J. Kane            /s/ William A. Czapar
Walter J. "Pat" Kane              William A. Czapar, President-WILLPAR Inc.
                                  Lender

                                  WILLPAR Inc.
3324 South Susan Street           4640 East La Palma Ave.
Santa Ana, CA 92704               Anaheim, CA 92807

Its Chief Executive Officer

Date: 5-18-01                     Date: 5/30/01
<PAGE>

                                   AGREEMENT

WHEREAS, Applied Data Communications, Inc., ("ADC" or "Borrower") requires
additional financing to capitalize on business opportunities, presently
available to it, and William A. Czapar ("Lender") is willing to provide such
financing ("Borrowing") under terms and conditions as set forth below,

NOW THEREFORE, ADC and Lender (collectively "Parties"), in exchange for the
foregoing and other good and valuable consideration, do hereby agree and
covenant as follows:

1. Amount of Borrowing.
Amount of the Borrowing shall be $300,000.

2. Rate, Fees.
Borrower shall compensate Lender with interest paid monthly, in the amount of 1%
per month, in addition to administrative fees paid monthly, in the amount of 1%
per month.  Lender hereby grants to Borrower the right to pay interest and fees
in registered common shares of the Borrower's stock, valued at $.80 per share,
with said shares to be issued within thirty (30) days of payoff of the note.

Lender will permit Borrower to pay interest and fees in Series B preferred
shares, convertible to common shares at the exchange rate of 100 shares of
common stock for every share of Series B preferred stock.  Such Series B
preferred shares will be adjusted upward to yield 20% more shares of common
stock, should Borrower be unable to provide registered shares in its place.
Lender will permit borrower to convert the note prior to its maturity date,
provided that the number of such shares paid for interest and fees will assume
the note was held to maturity.

3. Term, Prepayment.
The Borrowing shall commence on March, 11, 2001 and shall be repayable in its
entirety on September 11, 2001.  Said Borrowing may be repaid in whole or in
part, by the Borrower, without premium or penalty, at any time prior to the
Maturity Date, at the option of the Borrower, provided, however, that the Lender
shall be entitled to retain all options as defined under paragraph 4 hereunder,
regardless of whether borrowing is prepaid.

4. Additional Consideration.
Borrower shall grant Lender options to purchase 375,000 shares of registered
common stock of the Borrower, at a price of $.80 per common share, such options
being available for a  period of twenty-four months, commencing with the date of
this note.  Options may not be exercised prior to January 1, 2002.

5. Legal and Collection Fees.
Borrower agrees to compensate Lender for reasonable legal and collection fees
and expense incurred by Lender, in the event that Borrower is unable to repay
Borrowing when due.
<PAGE>

6. Modification.
The terms of this Agreement shall not be varied, altered or modified except in
writing signed by the Borrower and the Lender.

7. Conversion.
Conversion of borrowings as defined hereunder, shall occur on or before
September 11, 2001.  Lender agrees to convert principal amount $300,000 to
375,000 shares of the Borrower's "registered" common stock (price of $.80 per
common share).  Lender will permit Borrower to convert said note into Borrower's
Series B preferred shares, convertible to common shares at the exchange rate of
100 shares of common stock for every share of Series B preferred stock.  Such
Series B preferred shares will be adjusted upward to yield 20% more shares of
common stock, adjusted to 450,000 common shares, should Borrower be unable to
provide registered common shares in its place.

Should Lender request conversion of this note to such shares of Series B
preferred stock, prior to maturity of the note, Lender will be entitled to
receive all of such interest and fee shares, per paragraph 2, herein, as if such
note were held to maturity.

Pursuant thereto, total shares, including interest and fees (six months), under
the conversion option, would be the aforementioned 450,000 common shares, plus
54,000 shares for fees and interest, or a total of 504,000 (5,040 shares of
Series B Preferred Stock).

10. Validity Period.
All provisions herein are subject to renegotiation after June 1, 2001.

11. Jurisdiction, Arbitration
The provisions of this Agreement are to be construed according to, and are to be
governed by the laws of the State of California.

IN WITNESS WHEREOF, Parties acknowledge their agreement with the aforementioned
terms and conditions, by their signatures, as indicated below.

Applied Date Communications, Inc.          Willpar, Inc.
By: /s/ Walter J. Kane                     /s/ William A. Czapar, Pres.
                                           Lender

Walter J. "Pat" Kane                       William A. Czapar
President                                  President

3324 South Susan Street                    4640 East La Palma Ave.
Santa Ana, CA 92704                        Anaheim, CA 92807

Date: March 11, 2001                       Date: 3/11/01
<PAGE>

ADC
APPLIED DATA COMMUNICATIONS

May 11, 2001

Mr. William A. Czapar
4640 East La Palma Ave
Anaheim, CA 92807

Dear Mr. Czapar:

Your note agreement with Applied Data Communications, Inc. ("ADC") provides for
the exchange of such note into registered shares of ADC's common stock in
quantity to include all principal, interest and fees, at the rate of one share
for every $.80 of such principal, fees and interest.

ADC has been endeavoring to implement such conversion for the past several
weeks.  We have been advised by counsel that the specific shares we anticipated
using for this purpose, would no longer be considered as "registered".  Although
the shares were considered as registered at one time, their reacquisition by an
"affiliate" of ADC, as defined, changes their status to that of unregistered
shares.

Consequently, ADC is currently unable to provide such shares, pursuant to our
obligation to you. Reflecting on this, and in discussions with Mr. George C.
Colin, an advisor to the company, ADC is offering an alternative conversion
program which we believe will be beneficial to you.

ADC is offering to convert your note into ADC preferred stock, Series B, which
is convertible into common shares, at the rate of 100 shares of common for each
share of the Series B preferred stock, with voting privileges based on the
number of common shares into which the Series B preferred stock is convertible.

As George may have already have advised you, as a further acknowledgment of the
alteration this represents to your agreement, ADC is offering to adjust the
number of Series B preferred shares upward by 20%.  This will provide to you an
additional 20% common shares, over that to which you would otherwise have
received. ADC will plan to convert such Series B shares to common shares, and to
register such shares within the fourth calendar quarter of 2001.

Should you elect not to accept this offer, ADC will provide registered common
shares prior to the end of ADC's fiscal third quarter.

ADC apologizes for the inconvenience this may represent to you, and sincerely
hopes that you will find this to be an acceptable compensation for the
accommodation we are requesting.

Anticipating your continued support, we are enclosing a new certificate for the
appropriate number of Series B shares. We would request that you acknowledge
receipt of such shares below, and returning same to ADC.

Thank you once again for your continued support.

      3324 South Susan  Santa Ana  California 92704  Phone 714.668.5200
                               Fax 714.668.5229
<PAGE>

Sincerely

/s/ Walter J. Kane

Walter J. Kane
Chief Executive Officer

AGREED AND ACCEPTED:

/s/ William A. Czapar
(Name)

5/11/01
(Date)
<PAGE>

                                   AGREEMENT

WHEREAS, Applied Data Communications, Inc., ("ADC" or Borrower") requires
additional financing to capitalize on business opportunities, presently
available to it, and William A. Czapar ("Lender") is willing to provide such
financing ("Borrowing") under terms and conditions as set forth below,

NOW THEREFORE, ADC and Lender (collectively "Parties"), in exchange for the
foregoing and other good and valuable consideration, do hereby agree and
covenant as follows:

1. Amount of Borrowing.
Amount of the Borrowing shall be $100,000.

2. Rate, Fees.
Borrower shall compensate Lender with interest paid monthly, in the amount of 1%
per month, in addition to administrative fees paid monthly, in the amount of 1%
per month.  Lender hereby grants to Borrower the right to pay interest and fees
in registered common shares of the Borrower's stock, valued at $.80 per share,
with said shares to be issued within thirty (30) days of payoff of the note.
Lender will permit Borrower to pay interest and fees in registered common
shares, prior to maturity of the note, the number of such shares paid will
assume the note was held to maturity.

3. Term, Prepayment.
The Borrowing shall commence on April 26, 2001 and shall be repayable in its
entirety on October 26, 2001.  Said Borrowing may be repaid in whole or in part,
by the Borrower, without premium or penalty, at any time prior to the Maturity
Date, at the option of the Borrower, provided, however, that the Lender shall be
entitled to retain all options as defined under paragraph 4 hereunder,
regardless of whether borrowing is prepaid.

4. Additional Consideration.
Borrower shall grant Lender options to purchase 125,000 shares of registered
common stock of the Borrower, at a price of $.80 per common share, such options
being available for a period of twenty-four months, commencing with the date of
this note.

5. Legal and Collection Fees.
Borrower agrees to compensate Lender for reasonable legal and collection fees
and expense incurred by Lender, in the event that Borrower is unable to repay
Borrowing when due.

6. Modification.
The terms of this Agreement shall not be varied, altered or modified except in
writing signed by the Borrower and the Lender.

7. Conversion.
Conversion of borrowings as defined hereunder, shall occur on or before October
26, 2001.  Lender agrees to convert principal amount $100,000 to 125,000 shares
of the Borrower" registered common stock (price of $.80 per common share).
<PAGE>

10. Jurisdiction, Arbitration
The provisions of this Agreement are to be construed according to, and are to be
governed by the laws of the State of California.

IN WITNESS WHEREOF, Parties acknowledge their agreement with the aforementioned
terms and conditions, by their signatures, as indicated below.

Applied Date Communications, Inc.

By: /s/ Walter J. Kane                  /s/ William A. Czapar
Walter J "Pat" Kane                     William A. Czapar
                                        Lender

3324 South Susan Street                 4640 East La Palma Ave.
Santa Ana, CA 92704                     Anaheim, CA 92807

Its: Chief Executive Officer

Date: 4-26-01                           Date: 5/1/01

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