Exhibit 3.7

                              AMENDED AND RESTATED

                                     BY-LAWS

                                       of

                                AMR HOLDCO, INC.

                          1. MEETINGS OF STOCKHOLDERS.

     1.1 Annual Meeting. The annual meeting of stockholders shall be held on
such date and at such time as shall be designated from time to time by the board
of directors (the "Board") and stated in the notice of the meeting.

     1.2 Special Meetings. Special meetings of the stockholders may be called by
resolution of the Board or by the president and shall be called by the chief
executive officer, president or secretary upon the written request (stating the
purpose or purposes of the meeting) of a majority of the directors then in
office or of the holders of 51% of the outstanding shares entitled to vote. Only
business related to the purposes set forth in the notice of the meeting may be
transacted at a special meeting.

     1.3 Place and Time of Meetings. Meetings of the stockholders may be held in
or outside Delaware at the place and time specified by the Board or the
directors or stockholders requesting the meeting.

     1.4 Notice of Meetings; Waiver of Notice. Written notice of each meeting of
stockholders shall be given to each stockholder entitled to vote at the meeting,
except that (a) it shall not be necessary to give notice to any stockholder who
submits a signed waiver of notice before or after the meeting, and (b) no notice
of an adjourned meeting need be given except when required under Section 1.5 of
these by-laws or by law. Each notice of a meeting shall be given, personally or
by mail, not less than 10 nor more than 60 days before the meeting and shall
state the time and place of the meeting, and unless it is the annual meeting,
shall state at whose direction or request the meeting is called and the purposes
for which it is called. If mailed, notice shall be considered given when mailed
to a stockholder at his address on the corporation's records. The attendance of
any stockholder at a meeting, without protesting at the beginning of the meeting
that the meeting is not lawfully called or convened, shall constitute a waiver
of notice by him.

     1.5 Quorum. At any meeting of stockholders, the presence in person or by
proxy of the holders of a majority of the shares entitled to vote shall
constitute a quorum for the transaction of any business. In the absence of a
quorum a majority in voting interest of those present or, if no stockholders are
present, any officer entitled to preside at or to act as secretary of the
meeting, may adjourn the meeting until a quorum is present. At any adjourned
meeting at which a quorum is present any action may be taken which might have
been taken at the meeting as originally called. No notice of an adjourned
meeting need be given if the time and place are



announced at the meeting at which the adjournment is taken except that, if
adjournment is for more than thirty days or if, after the adjournment, a new
record date is fixed for the meeting, notice of the adjourned meeting shall be
given pursuant to Section 1.4.

     1.6 Voting; Proxies. Each stockholder of record shall be entitled to one
vote for every share registered in his name. Corporate action to be taken by
stockholder vote, other than the election of directors, shall be authorized by a
majority of the votes cast at a meeting of stockholders, except as otherwise
provided by law or by Section 1.8 of these by-laws. Directors shall be elected
in the manner provided in Section 2.1 of these by-laws. Voting need not be by
ballot unless requested by a stockholder at the meeting or ordered by the
chairman of the meeting; however, all elections of directors shall be by written
ballot, unless otherwise provided in the certificate of incorporation. Each
stockholder entitled to vote at any meeting of stockholders or to express
consent to or dissent from corporate action in writing without a meeting may
authorize another person to act for him by proxy. Every proxy must be signed by
the stockholder or his attorney-in-fact. No proxy shall be valid after three
years from its date unless it provides otherwise.

     1.7 List of Stockholders. Not less than 10 days prior to the date of any
meeting of stockholders, the secretary of the corporation shall prepare a
complete list of stockholders entitled to vote at the meeting, arranged in
alphabetical order and showing the address of each stockholder and the number of
shares registered in his name. For a period of not less than 10 days prior to
the meeting, the list shall be available during ordinary business hours for
inspection by any stockholder for any purpose germane to the meeting. During
this period, the list shall be kept either (a) at a place within the city where
the meeting is to be held, if that place shall have been specified in the notice
of the meeting, or (b) if not so specified, at the place where the meeting is to
be held. The list shall also be available for inspection by stockholders at the
time and place of the meeting.

     1.8 Action by Consent Without a Meeting. Any action required or permitted
to be taken at any meeting of stockholders may be taken without a meeting,
without prior notice and without a vote, if a consent in writing, setting forth
the action so taken, shall be signed by the holders of outstanding stock having
not less than the minimum number of votes that would be necessary to authorize
or take such action at a meeting at which all shares entitled to vote thereon
were present and voting. Prompt notice of the taking of any such action shall be
given to those stockholders who did not consent in writing.

                             2. BOARD OF DIRECTORS.

     2.1 Number, Qualification, Election and Term of Directors. The business of
the corporation shall be managed by the Board which shall consist of two
directors and may be increased or decreased at any time and from time to time by
resolution of the Board, without amendment to the bylaws, but no decrease may
shorten the term of any incumbent director. Directors shall be elected at each
annual meeting of stockholders by a plurality of the votes cast and shall hold
office until the next annual meeting of stockholders and until the election and
qualification of their respective successors, subject to the provisions of
Section 2.9. As used in these by-laws, the term "entire Board" means the total
number of directors which the corporation would have if there were no vacancies
on the Board.


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     2.2 Quorum and Manner of Acting. A majority of the directors then in office
shall constitute a quorum for the transaction of business at any meeting, except
as provided in Section 2.10 of these by-laws. Action of the Board shall be
authorized by the vote of a majority of the directors present at the time of the
vote if there is a quorum, unless otherwise provided by law or these by-laws. In
the absence of a quorum a majority of the directors present may adjourn any
meeting from time to time until a quorum is present.

     2.3 Place of Meetings. Meetings of the Board may be held in or outside
Delaware.

     2.4 Annual and Regular Meetings. Annual meetings of the Board, for the
election of officers and consideration of other matters, shall be held either
(a) without notice immediately after the annual meeting of stockholders and at
the same place, or (b) as soon as practicable after the annual meeting of
stockholders, on notice as provided in Section 2.6 of these by-laws. Regular
meetings of the Board may be held without notice at such times and places as the
Board determines. If the day fixed for a regular meeting is a legal holiday, the
meeting shall be held on the next business day.

     2.5 Special Meetings. Special meetings of the Board may be called by the
chief executive officer or the president or by any one of the directors. Only
business related to the purposes set forth in the notice of meeting may be
transacted at a special meeting.

     2.6 Notice of Meetings; Waiver of Notice. Notice of the time and place of
each special meeting of the Board, and of each annual meeting not held
immediately after the annual meeting of stockholders and at the same place,
shall be given to each director by mailing it to him at his residence or usual
place of business at least three days before the meeting, or by delivering it to
him via delivery, telephone or facsimile at least two days before the meeting.
Notice of a special meeting shall also state the purpose or purposes for which
the meeting is called. Notice need not be given to any director who submits a
signed waiver of notice before or after the meeting or who attends the meeting
without protesting at the beginning of the meeting the transaction of any
business because the meeting was not lawfully called or convened. Notice of any
adjourned meeting need not be given, other than by announcement at the meeting
at which the adjournment is taken.

     2.7 Board or Committee Action Without a Meeting. Any action required or
permitted to be taken by the Board or by any committee of the Board may be taken
without a meeting if all of the members of the Board or of the committee consent
in writing to the adoption of a resolution authorizing the action. The
resolution and the written consents by the members of the Board or the committee
shall be filed with the minutes of the proceeding of the Board or of the
committee.

     2.8 Participation in Board or Committee Meetings by Conference Telephone.
Any or all members of the Board or of any committee of the Board may participate
in a meeting of the Board or of the committee by means of a conference telephone
or similar communications equipment allowing all persons participating in the
meeting to hear each other at the same time. Participation by such means shall
constitute presence in person at the meeting.

     2.9 Resignation and Removal of Directors. Any director may resign at any
time by delivering his resignation in writing to the chief executive officer,
president or secretary of the corporation, to take effect at the time specified
in the resignation; the acceptance of a


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resignation, unless required by its terms, shall not be necessary to make it
effective. Any or all of the directors may be removed at any time, either with
or without cause, by vote of the stockholders.

     2.10 Vacancies. Any vacancy in the Board, including one created by an
increase in the number of directors, may be filled for the unexpired term by a
majority vote of the remaining directors, though less than a quorum.

     2.11 Compensation. Directors shall receive such compensation as the Board
determines, together with reimbursement of their reasonable expenses in
connection with the performance of their duties. A director may also be paid for
serving the corporation, its affiliates or subsidiaries in other capacities.

                                 3. COMMITTEES.

     3.1 Executive Committee. The Board, by resolution adopted by a majority of
the entire Board, may designate an Executive Committee of one or more directors
which shall have all the powers and authority of the Board, except as otherwise
provided in the resolution, section 141(c) of the Delaware General Corporation
Law, or any other applicable law. The members of the Executive Committee shall
serve at the pleasure of the Board. All action of the Executive Committee shall
be reported to the Board at its next meeting.

     3.2 Other Committees. The Board, by resolution adopted by a majority of the
entire Board, may designate other committees of directors of one or more
directors, which shall serve at the Board's pleasure and have such powers and
duties as the Board determines.

     3.3 Rules Applicable to Committees. The Board may designate one or more
directors as alternate members of any committee, who may replace any absent or
disqualified member at any meeting of the committee. In the absence or
disqualification of any member of a committee, the member or members present at
a meeting of the committee and not disqualified, whether or not a quorum, may
unanimously appoint another director to act at the meeting in place of the
absent or disqualified member. All action of a committee shall be reported to
the Board at its next meeting. Each committee shall adopt rules of procedure and
shall meet as provided by those rules or by resolutions of the Board.


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                                  4. OFFICERS.

     4.1 Number; Security. The executive officers of the corporation shall be,
the chief executive officer, the president, the chief financial officer, one or
more vice presidents (including an executive vice president, if the Board so
determines), a secretary and a treasurer. Any two or more offices may be held by
the same person except the offices of president and secretary. The Board may
require any officer, agent or employee to give security for the faithful
performance of his duties.

     4.2 Election; Term of Office. The executive officers of the corporation
shall be elected annually by the Board and each such officer shall hold office
until the next annual meeting of the Board and until the election of his
successor, subject to the provisions of Section 4.4.

     4.3 Subordinate Officers. The Board may appoint subordinate officers
(including assistant secretaries and assistant treasurers), agents or employees,
each of whom shall hold office for such period and have such powers and duties
as the Board determines. The Board may delegate to any executive officer or to
any committee the power to appoint and define the powers and duties of any
subordinate officers, agents or employees.

     4.4 Resignation and Removal of Officers. Any officer may resign at any time
by delivering his resignation in writing to the chief executive officer,
president or secretary of the corporation, to take effect at the time specified
in the resignation; the acceptance of a resignation, unless required by its
terms, shall not be necessary to make it effective. Any officer appointed by the
Board or appointed by an executive officer or by a committee may be removed by
the Board either with or without cause, and in the case of an officer appointed
by an executive officer or by a committee, by the officer or committee who
appointed him or by the president.

     4.5 Vacancies. A vacancy in any office may be filled for the unexpired term
in the manner prescribed in Sections 4.2 and 4.3 of these by-laws for election
or appointment to the office.

     4.6 The Chief Executive Officer. The chief executive officer shall be the
chief executive officer of the corporation and shall preside at all meetings of
the Board and of the stockholders. Subject to the control of the Board, he shall
have general supervision over the business of the corporation and shall have
such other powers and duties as chief executive officers of corporations usually
have or as the Board assigns to him.

     4.7 The President. The president shall be the president of the corporation.
Subject to the control of the Board, he shall have such other powers and duties
as presidents of corporations usually have or as the Board or the chief
executive officer assigns to him.

     4.8 Vice President. Each vice president shall have such powers and duties
as the Board or the president assigns to him.

     4.9 The Chief Financial Officer. The chief financial officer shall be the
chief financial officer of the corporation and shall be in charge of the
corporation's books and accounts.


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Subject to the control of the Board, he shall have such other powers and duties
as the Board or the chief executive officer or the president assigns to him.

     4.10 The Treasurer. The treasurer shall be the treasurer of the
corporation. Subject to the control of the Board, he shall have such other
powers and duties as the Board or the chief financial officer or the president
assigns to him.

     4.11 The Secretary. The secretary shall be the secretary of, and keep the
minutes of, all meetings of the Board and of the stockholders, shall be
responsible for giving notice of all meetings of stockholders and of the Board,
and shall keep the seal and, when authorized by the Board, apply it to any
instrument requiring it. Subject to the control of the Board, he shall have such
powers and duties as the Board or chief executive officer or the president
assigns to him. In the absence of the secretary from any meeting, the minutes
shall be kept by the person appointed for that purpose by the presiding officer.

     4.12 Salaries. The Board may fix the officers' salaries, if any, or it may
authorize the president to fix the salary of any other officer.

                                   5. SHARES.

     5.1 Certificates. The corporation's shares shall be represented by
certificates in the form approved by the Board. Each certificate shall be signed
by, the president or a vice president and by the secretary or an assistant
secretary, or the treasurer or an assistant treasurer, and shall be sealed with
the corporation's seal or a facsimile of the seal. Any or all of the signatures
on the certificate may be a facsimile.

     5.2 Transfers. Shares shall be transferable only on the corporation's
books, upon surrender of the certificate for the shares, properly endorsed. The
Board may require satisfactory surety before issuing a new certificate to
replace a certificate claimed to have been lost or destroyed.

     5.3 Determination of Stockholders of Record. The Board may fix, in advance,
a date as the record date for the determination of stockholders entitled to
notice of or to vote at any meeting of the stockholders, or to express consent
to or dissent from any proposal without a meeting, or to receive payment of any
dividend or the allotment of any rights, or for the purpose of any other action.
The record date may not be more than 60 or less than 10 days before the date of
the meeting or more than 60 days before any other action.

                                6. MISCELLANEOUS.

     6.1 Seal. The Board shall adopt a corporate seal, which shall be in the
form of a circle and shall bear the corporation's name and the year and state in
which it was incorporated.

     6.2 Fiscal Year. The Board may determine the corporation's fiscal year.
Until changed by the Board, the corporation's fiscal year shall be the calendar
year.

     6.3 Voting of Shares in Other Corporations. Shares in other corporations
which are held by the corporation may be represented and voted by the chief
executive officer, president or a


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vice president of this corporation or by proxy or proxies appointed by one of
them. The Board may, however, appoint some other person to vote the shares.

     6.4 Amendments. By-laws may be amended, repealed or adopted by the
stockholders or by a majority of the entire Board, but any by-law adopted by the
Board may be amended or repealed by the stockholders.


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