Document:

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                                                                   EXHIBIT 10.1

                         AMENDMENT TO SERVICE AGREEMENT

         Daniel R. Fischel ("Mr. Fischel") entered into a service agreement with
Lexecon Inc. ("Lexecon") and Nextera Enterprises, Inc. ("Nextera") on December
31, 2002 (the "Service Agreement"). The purpose of this Agreement (this
"Agreement") is to amend certain provisions of the Service Agreement.

         The parties agree as follows:

         1.       The first sentence of Section 5(b) of the Service Agreement is
amended and restated to read as follows:

         "During the term of this Agreement, Mr. Fischel shall manage the
Chicago Office in accordance with the shared goal of Mr. Fischel and the Company
to maximize the operating income of the Chicago Office."

         2.       The first paragraph of Section 5(c) is amended and restated to
read as follows:

         "The Group shall maintain a bonus pool for the Chicago Office (the
"Bonus Pool"), calculated annually based on a calendar year. Mr. Fischel shall
have the authority to allocate the Bonus Pool to himself and the other service
providers in the Chicago Office, subject to the review and approval of the
Compensation Committee of the Board of Directors of the Company (the
"Compensation Committee"); provided, however, that the Compensation Committee
shall not prohibit an allocation of the Bonus Pool to Mr. Fischel which is the
same as his 2001 Percentage (as defined below) of the Bonus Pool without Mr.
Fischel's consent. Notwithstanding the foregoing, Mr. Fischel acknowledges that
it may be in the mutual financial benefit of the parties for the Company to hire
one or more additional senior professionals for the Chicago Office in an effort
to increase the operating income of said office and, in said event, it may be
necessary to provide to said senior professional(s) a percentage of the Bonus
Pool and to decrease Mr. Fischel's percentage of the Bonus Pool to reflect such
hiring and the additional operating income anticipated to be generated for the
Chicago Office by such action. Mr. Fischel agrees in any such events to act in
good faith and not to unreasonably withhold his consent to a request by the
Company to reduce Mr. Fischel's Bonus Pool percentage below the 2001 Percentage.
(Any reference in this Agreement to "Mr. Fischel's Percentage" shall mean his
2001 Percentage as modified as provided above.) The "2001 Percentage" shall mean
36%. The Bonus Pool shall equal:"

         3.       Section 5(l) is deleted in its entirety.

         4.       Mr. Fischel acknowledges that the foregoing amendments to his
Service Agreement do not constitute "Good Reason" for Mr. Fischel to terminate
his employment under the Service Agreement.

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         5.       All other provisions of the Service Agreement remain in full
force and effect, and the parties to said Service Agreement retains all of his
or its rights and remains subject to all of his or its obligations thereunder.

                                        2

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         Whereas, the parties have entered into this Agreement as of April 24,
2003.

                                                   /s/ Daniel R. Fischel
                                                   -----------------------------
                                                   Daniel R. Fischel

                                                   LEXECON INC.

                                                   By: /s/ MICHAEL P. MULDOWNEY
                                                      --------------------------

                                                   NEXTERA ENTERPRISES, INC.

                                                   By: /s/ RICHARD V. SANDLER
                                                      --------------------------

                                        3<PAGE>

                                                                   EXHIBIT 10.2

                         AMENDMENT TO SERVICE AGREEMENT

         Dennis W. Carlton ("Mr. Carlton") entered into a service agreement with
Lexecon Inc. ("Lexecon") and Nextera Enterprises, Inc. ("Nextera") on December
31, 2002 (the "Service Agreement"). The purpose of this Agreement (this
"Agreement") is to amend certain provisions of the Service Agreement.

         The parties agree as follows:

         1.       The first sentence of Section 5(a) of the Service Agreement is
amended and restated to read as follows:

         "Services performed by Mr. Carlton for the Group shall be as an
employee, under the supervision and direction of the Chief Executive Officer of
Lexecon (currently Mr. Fischel)."

         2.       Section 5(b) of the Service Agreement is amended and restated
to read as follows:

         "Mr. Carlton's duties shall include non-billable client development
efforts on behalf of the Group, for which he will be paid at Lexecon's then
hourly billing rate for Mr. Carlton, up to a maximum of 25 hours per year."

         3.       The first paragraph of Section 5(c) is amended and restated to
read as follows:

         "The Group shall maintain a bonus pool for the Chicago Office (the
"Bonus Pool"), calculated annually based on a calendar year. "Chicago Office"
shall mean the existing Chicago office of Lexecon, but shall not include
Lexecon's offices in the Cambridge, Massachusetts area or any future office
opened by the Company, Lexecon or their affiliates (unless the primary purpose
of such office is to provide additional professional service or support for
business generated by Mr. Carlton). Mr. Carlton shall be entitled to a share of
the Bonus Pool subject to the review and approval of the Compensation Committee
of the Board of Directors of the Company (the "Compensation Committee");
provided, however, that Mr. Carlton's share of the Bonus Pool shall not be less
than his 2001 Percentage (as defined below) of the Bonus Pool without Mr.
Carlton's consent. Notwithstanding the foregoing, Mr. Carlton acknowledges that
it may be in the mutual financial benefit of the parties for the Company to hire
one or more additional senior professionals for the Chicago Office in an effort
to increase the operating income of said office and, in said event, it may be
necessary to provide to said senior professional(s) a percentage of the Bonus
Pool and to decrease Mr. Carlton's percentage of the Bonus Pool to reflect such
hiring and the additional operating income anticipated to be generated for the
Chicago Office by such action. Mr. Carlton agrees in any such events to act in
good faith and not to unreasonably withhold his consent to a request by the
Company to reduce Mr. Carlton's Bonus Pool percentage below the 2001 Percentage.
(Any reference in this Agreement to "Mr. Carlton's Percentage" shall mean his
2001 Percentage as modified as provided above.) The "2001 Percentage" shall mean
36%. The Bonus Pool shall equal:"

         4.       Section 5(l) is deleted in its entirety.

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         5.       Mr. Carlton, Lexecon and Nextera confirm that Mr. Carlton: (a)
is not and has never been a director, officer or employee of Nextera and (b) is
not, and since December 2001 has not been, an officer or director of Lexecon.

         6.       Mr. Carlton acknowledges that the foregoing amendments to his
Service Agreement do not constitute "Good Reason" for Mr. Carlton to terminate
his employment under the Service Agreement.

         7.       All other provisions of the Service Agreement remain in full
force and effect, and the parties to said Service Agreement retains all of his
or its rights and remains subject to all of his or its obligations thereunder.

                                        2

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         Whereas, the parties have entered into this Agreement as of April 18,
2003.

                                                    /s/ Dennis W. Carlton
                                                    ----------------------------
                                                    Dennis W. Carlton

                                                    LEXECON INC.

                                                    By: /s/ MICHAEL P. MULDOWNEY
                                                       -------------------------

                                                    NEXTERA ENTERPRISES, INC.

                                                    By: /s/ RICHARD V. SANDLER
                                                       -------------------------

                                        3[EXHIBIT 4.1]
                         FIRST AMENDMENT
                               TO
                   SECURITIES PURCHASE AGREEMENT

     FIRST AMENDMENT TO SECURITIES PURCHASE AGREEMENT (this "First
Amendment") dated as of May 5, 2003 by and between EAGLE SUPPLY GROUP,
INC., a Delaware corporation (the "Company"), JAMES E. HELZER, President
of the Company (the "Purchaser"), and TDA INDUSTRIES, INC., a New York
corporation ("TDA").

                          RECITALS

     WHEREAS, the Company and the Purchaser entered into a Securities
Purchase Agreement, dated as of February 6, 2003 (the "Original
Securities Purchase Agreement"), whereby the Company issued and sold
to the Purchaser 1,000,000 shares of Common Stock and Warrants to
purchase 1,000,000 shares of Common Stock for an aggregate purchase
price of $1,000,000;

     WHEREAS, the Common Stock is listed for quotation on the Nasdaq
SmallCap Market;

     WHEREAS, the parties to the Original Securities Purchase
Agreement believed that the transactions contemplated by the Original
Securities Purchase Agreement satisfied applicable Nasdaq rules and
interpretations and did not require prior stockholder approval, upon
review of the Original Securities Purchase Agreement and Warrant
Nasdaq determined that the approval of the Company's stockholders is
required prior to: (i) the adjustment of the exercise price of the
Warrants below $0.875 per Warrant Share, and (ii) the Purchaser's
exercise of the Warrants with respect to Warrant Shares exceeding
811,090 Warrant Shares (collectively, the "Nasdaq Shareholder Approval
Proposals");

     WHEREAS, as an inducement to the Purchaser to enter into this
First Amendment, TDA has agreed to vote all shares of Common Stock
held by TDA in favor of the Nasdaq Shareholder Approval Proposals when
the vote of the Company's stockholders is solicited with respect to
the Nasdaq Shareholder Approval Proposals; and

     WHEREAS, upon the recommendation of Nasdaq the Company, the
Purchaser and TDA now desire to amend the Securities Purchase
Agreement on the terms and conditions set forth in this First
Amendment (the Original Securities Purchase Agreement, as amended by
this First Amendment, is referred to herein as the "Agreement").

     NOW, THEREFORE, in consideration of the above and mutual
representations, warranties, covenants, and agreements herein
contained, the parties hereby agree as follows:

     1.      Representations and Warranties.

             (a)  The caption "Section 4.3 Capitalization" of
     the Original Securities Purchase Agreement shall be
     deleted and replaced by "Section 4.4 Capitalization."

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             (b)  The Original Securities Purchase Agreement
     is hereby amended by adding a new section 4A
     immediately following Section 4 of the Agreement which
     reads as follows:

             "4A.    Representations and Warranties of TDA.
                     TDA hereby represents and warrants to the
                     Purchaser as follows:

                     4A.1    Organization.  TDA is a
                     corporation duly organized, validly
                     existing, and in good standing under
                     the laws of the State of New York.

                     4A.2    Authority.  The execution,
                     delivery and performance of this
                     Agreement and the transactions
                     contemplated thereby have been duly
                     authorized by all necessary corporate
                     action on the part of TDA.  This
                     Agreement has been duly executed and
                     delivered by TDA and constitutes a
                     valid and binding obligation of TDA.

                     4A.3    Beneficial Ownership of Common
                     Stock.  TDA is the beneficial owner of
                     5,300,000 shares of Common Stock and
                     has sole dispositive and voting power
                     with respect to such shares, free and
                     clear of all Liens, including, without
                     limitation, any restrictions on the
                     right to vote such shares.

                     4A.4    Non-Contravention.  The
                     execution, delivery and performance of
                     this Agreement by TDA and the
                     consummation by TDA of the
                     transactions contemplated by this
                     Agreement do not and will not conflict
                     with or result in a breach by TDA of
                     any of the terms or provisions of, or
                     constitute a default under (a) the
                     certificate of incorporation or other
                     charter document and by-laws of TDA,
                     each as currently in effect, (b) any
                     material indenture, mortgage, deed of
                     trust, or other material agreement or
                     instrument to which TDA is a party or
                     by which it or any of its properties
                     or assets are bound, or (c) to its
                     knowledge, any existing applicable
                     law, rule, or regulation or any
                     applicable decree, judgment, or order
                     of any court, United States federal or
                     state regulatory body, administrative
                     agency, or other governmental body
                     having jurisdiction over TDA or any of
                     its assets; except in the case of
                     Section 4A.4(b) and 4A.4(c) hereof for
                     conflicts, breaches, or defaults that
                     would not have a material adverse
                     effect on TDA."

                                   2

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     2.  Other Agreements and Covenants.    Section 6 of the Original
Securities Purchase Agreement is hereby amended by adding a new
Section 6.5 and Section 6.6 as follows:

                     "6.5    Stockholder Vote.  The Company hereby
                     agrees and covenants to the Purchaser that
                     it will seek a vote of the stockholders of
                     the Company to approve the Nasdaq
                     Shareholder Approval Proposals as soon as
                     practicable following the filing of the
                     Company's Form 10-Q for the quarter ended
                     March 31, 2003.

                     6.6     TDA Voting Agreement.  TDA hereby
                     agrees and covenants to the Purchaser that
                     it will (i) support any Company action to
                     call for a stockholder vote on the Nasdaq
                     Shareholder Approval Proposals as soon as
                     practicable following the date hereof, and
                     (ii) vote all of the shares of Common Stock
                     beneficially owned by TDA ("TDA Shares") in
                     favor of the Nasdaq Shareholder Approval
                     Proposals.

     3.  Miscellaneous.

         Section 10.1 of the Original Securities Purchase Agreement
is hereby amended:

         (a) by deleting the phrase "If to Purchasers" and by
     inserting in lieu thereof, the phrase "If to Purchaser", and

         (b) by deleting the reference to Marilyn Helzer.

     4.  Defined Terms.  All terms that are capitalized herein, but
which are not otherwise defined herein by this First Amendment shall
have the meaning ascribed to them in the Original Securities Purchase
Agreement.

     5.  Inconsistent Provisions.  All provisions of the Original
Securities Purchase Agreement that have not been amended by this First
Amendment shall remain in full force and effect.  Notwithstanding the
foregoing to the contrary, to the extent that there is any
inconsistency between the provisions of the Original Securities
Purchase Agreement and this First Amendment, the provisions of this
First Amendment shall control and be binding.

     6.  Counterparts.  This First Amendment may be executed in one
or more counterparts, all of which taken together shall constitute a
single instrument.  Execution and delivery may be by facsimile
transmission.

     7.  Effective Date.  Each of the parties hereto hereby agrees
that upon execution of this First Amendment the changes to the
Original Securities Purchase Agreement contained herein shall be
effective as of February 6, 2003.

                   [Signatures on Following Page]

                                   3

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	IN WITNESS WHEREOF, each of the parties hereto has caused this
First Amendment to be executed on its behalf.

                                   THE COMPANY

                                   EAGLE SUPPLY GROUP, INC.
                                     a Delaware corporation

                                   By: /s/ Douglas P. Fields
                                      -------------------------------
                                      Douglas P. Fields,
                                      Chief Executive Officer

                                   PURCHASER

                                   James E. Helzer, Individually

                                   /s/ James E. Helzer
                                   -----------------------------------
                                   James E. Helzer

                                   TDA INDUSTRIES, INC.,
                                     a New York corporation

                                   By: /s/ Douglas P. Fields
                                      --------------------------------
                                      Douglas P. Fields,
                                      President and Chief Executive
                                      Officer

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