<PAGE>

                                                                     Exhibit 4.3
                                                                     -----------

                             AMENDED AND RESTATED

                                    BY-LAWS

                                      OF

                                MATRIXONE, INC.

                     ------------------------------------


                            A Delaware Corporation
<PAGE>

                                    BY-LAWS

                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                           Page
                                                                           ----
<S>                                                                        <C>
ARTICLE 1 - Stockholders....................................................  1

     Section 1.1    Place of Meetings.......................................  1
     Section 1.2    Annual Meeting..........................................  1
     Section 1.3    Special Meetings........................................  1
     Section 1.4    Notice of Meetings......................................  1
     Section 1.5    Voting List.............................................  1
     Section 1.6    Quorum..................................................  2
     Section 1.7    Adjournments............................................  2
     Section 1.8    Voting and Proxies......................................  2
     Section 1.9    Action at Meeting.......................................  3
     Section 1.10   Introduction of Business at Meeting.....................  3
     Section 1.11   Action without Meeting..................................  5

ARTICLE 2 - Directors........................................................ 6

     Section 2.1    General Powers........................................... 6
     Section 2.2    Number; Election and Qualification....................... 6
     Section 2.3    Classes of Directors..................................... 7
     Section 2.4    Terms in Office.......................................... 7
     Section 2.5    Allocation of Directors Among Classes in the Event
                    of Increases or Decreases in the Number of Directors..... 7
     Section 2.6    Tenure................................................... 7
     Section 2.7    Vacancies................................................ 7
     Section 2.8    Resignation.............................................. 7
     Section 2.9    Regular Meetings......................................... 8
     Section 2.10   Special Meetings......................................... 8
     Section 2.11   Notice of Special Meetings............................... 8
     Section 2.12   Meetings by Telephone Conference Calls................... 8
     Section 2.13   Quorum................................................... 8
     Section 2.14   Action at Meeting........................................ 8
     Section 2.15   Action by Written Consent................................ 8
     Section 2.16   Removal.................................................. 9
     Section 2.17   Committees............................................... 9
     Section 2.18   Compensation of Directors................................ 9
     Section 2.19   Amendments to Article.................................... 9
</TABLE>
<PAGE>

                                     -ii-

<TABLE>
<S>                                                                          <C>
ARTICLE 3 - Officers......................................................... 9

     Section 3.1    Enumeration.............................................. 10
     Section 3.2    Election................................................. 10
     Section 3.3    Qualification............................................ 10
     Section 3.4    Tenure................................................... 10
     Section 3.5    Resignation and Removal.................................. 10
     Section 3.6    Vacancies................................................ 10
     Section 3.7    Chairman of the Board and Vice-Chairman of the Board..... 10
     Section 3.8    President................................................ 11
     Section 3.9    Vice Presidents.......................................... 11
     Section 3.10   Secretary and Assistant Secretaries...................... 11
     Section 3.11   Treasurer and Assistant Treasurers....................... 12
     Section 3.12   Salaries................................................. 12
     Section 3.13   Action with Respect to Securities of Other Corporations.. 12

ARTICLE 4 - Capital Stock....................................................

     Section 4.1    Issuance of Stock........................................ 12
     Section 4.2    Certificates of Stock.................................... 12
     Section 4.3    Transfers................................................ 13
     Section 4.4    Lost, Stolen or Destroyed Certificates................... 13
     Section 4.5    Record Date.............................................. 13

ARTICLE 5 - General Provisions............................................... 14

     Section 5.1    Fiscal Year.............................................. 14
     Section 5.2    Corporate Seal........................................... 14
     Section 5.3    Notices.................................................. 14
     Section 5.4    Waiver of Notice......................................... 14
     Section 5.5    Evidence of Authority.................................... 14
     Section 5.6    Facsimile Signatures..................................... 14
     Section 5.7    Reliance upon Books, Reports and Records................. 14
     Section 5.8    Time Periods............................................. 14
     Section 5.9    Certificate of Incorporation............................. 15
     Section 5.10   Transactions with Interested Parties..................... 15
     Section 5.11   Severability............................................. 15
     Section 5.12   Pronouns................................................. 15

ARTICLE 6 - Amendments....................................................... 15

     Section 6.1    By the Board of Directors................................ 15
     Section 6.2    By the Stockholders...................................... 16

ARTICLE 7 - Indemnification.................................................. 16
</TABLE>
<PAGE>

                                     -iii-

<TABLE>
<S>                                                                          <C>
     Section 7.1    Actions Other Than by or in the Right of the
                    Corporation.............................................. 16
     Section 7.2    Actions by or in the Right of the Corporation............ 16
     Section 7.3    Success on the Merits.................................... 17
     Section 7.4    Authorization............................................ 17
     Section 7.5    Expense Advance.......................................... 17
     Section 7.6    Nonexclusivity........................................... 17
     Section 7.7    Insurance................................................ 17
     Section 7.8    "The Corporation"........................................ 18
     Section 7.9    Other Indemnification.................................... 18
     Section 7.10   Other Definitions........................................ 18
     Section 7.11   Continuation of Indemnification.......................... 18
</TABLE>
<PAGE>

                              AMENDED AND RESTATED

                                    BY-LAWS

                                       OF

                      MATRIXONE, INC. (the "Corporation")


                            ARTICLE 1 - Stockholders
                            ------------------------

          1.1  Place of Meetings.  All meetings of stockholders shall be held at
               -----------------
such place within or without the State of Delaware as may be designated from
time to time by the Chairman of the Board (if any), the board of directors of
the Corporation (the "Board of Directors") or the President or, if not so
designated, at the registered office of the Corporation.

          1.2  Annual Meeting.  The annual meeting of stockholders for the
               --------------
election of directors and for the transaction of such other business as may
properly be brought before the meeting shall be held on a date to be fixed by
the Chairman of the Board (if any), the Board of Directors or the President
(which date shall not be a legal holiday in the place where the meeting is to be
held) at the time and place to be fixed by the Chairman of the Board, the Board
of Directors or the President and stated in the notice of the meeting.

          1.3  Special Meetings.  Special meetings of stockholders may be called
               ----------------
at any time only by the Chairman of the Board (if any), a majority of the Board
of Directors or the President and shall be held at such place, on such date and
at such time as shall be fixed by the Board of Directors or the person calling
the meeting.  Business transacted at any special meeting of stockholders shall
be limited to matters relating to the purpose or purposes stated in the notice
of meeting.

          1.4  Notice of Meetings.  Except as otherwise provided by law, written
               ------------------
notice of each meeting of stockholders, whether annual or special, shall be
given not less than ten (10) nor more than sixty (60) days before the date of
the meeting to each stockholder entitled to vote at such meeting.  The notices
of all meetings shall state the place, date and hour of the meeting.  The notice
of a special meeting shall state, in addition, the purpose or purposes for which
the meeting is called.  If mailed, notice is given when deposited in the United
States mail, postage prepaid, directed to the stockholder at his or her address
as it appears on the records of the Corporation.

          1.5  Voting List.  The officer who has charge of the stock ledger of
               -----------
the Corporation shall prepare, at least ten (10) days before every meeting of
stockholders, a complete list of the 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 the name of each stockholder.
Such list shall be open to the examination of any stockholder, for any purpose
germane to the meeting, during ordinary business hours, for a period of at least
ten (10) days prior to the meeting, either at a place within the metropolitan
area of the city where the meeting is to be held, which place shall be specified
in the notice of the
<PAGE>

                                      -2-

meeting, or if not so specified, at the place where the meeting is to be held.
The list shall also be produced and kept at the time and place of the meeting
during the whole time of the meeting, and may be inspected by any stockholder
who is present. This list shall presumptively determine the identity of the
stockholders entitled to vote at the meeting and the number of shares held by
each of them.

          1.6  Quorum.  Except as otherwise provided by law, the Certificate of
               ------
Incorporation or these Amended and Restated By-Laws, as amended from time to
time (the "By-Laws") the holders of a majority of the shares of the capital
stock of the Corporation issued and outstanding and entitled to vote at the
meeting, present in person or represented by proxy, shall constitute a quorum
for the transaction of business.  Shares held by brokers which such brokers are
prohibited from voting (pursuant to their discretionary authority on behalf of
beneficial owners of such shares who have not submitted a proxy with respect to
such shares) on some or all of the matters before the stockholders, but which
shares would otherwise be entitled to vote at the meeting ("Broker Non-Votes")
shall be counted, for the purpose of determining the presence or absence of a
quorum, both (a) toward the total voting power of the shares of capital stock of
the Corporation and (b) as being represented by proxy.  If a quorum has been
established for the purpose of conducting the meeting, a quorum shall be deemed
to be present for the purpose of all votes to be conducted at such meeting,
provided that where a separate vote by a class or classes, or series thereof, is
required, a majority of the voting power of the shares of such class or classes,
or series, present in person or represented by proxy shall constitute a quorum
entitled to take action with respect to that vote on that matter.  If a quorum
shall fail to attend any meeting, the chairman of the meeting or the holders of
a majority of the voting power of the shares of stock entitled to vote who are
present, in person or by proxy, may adjourn the meeting to another place, date,
or time.

          1.7  Adjournments.  Any meeting of stockholders may be adjourned to
               ------------
any other time and to any other place at which a meeting of stockholders may be
held under these By-Laws by the stockholders present or represented at the
meeting and entitled to vote, although less than a quorum, or, if no stockholder
is present, by any officer entitled to preside at or to act as Secretary of such
meeting.  It shall not be necessary to notify any stockholder of any adjournment
of less than 30 days if the time and place of the adjourned meeting are
announced at the meeting at which adjournment is taken, unless after the
adjournment a new record date is fixed for the adjourned meeting.  At the
adjourned meeting, the Corporation may transact any business that might have
been transacted at the original meeting.

          1.8  Voting and Proxies.  At any meeting of the stockholders, each
               ------------------
stockholder shall have one vote for each share of stock entitled to vote at such
meeting held of record by such stockholder and a proportionate vote for each
fractional share so held, unless otherwise provided in the Certificate of
Incorporation.  Each stockholder of record entitled to vote at a meeting of
stockholders, or to express consent or dissent to corporate action in writing
without a meeting (to the extent not otherwise prohibited by the Certificate of
Incorporation or these By-laws), may vote or express such consent or dissent in
person or may authorize another person or persons to vote or act for such
stockholder by written proxy executed by such stockholder or his or her
authorized agent or by a transmission permitted by law and delivered to the
Secretary of the Corporation.  No such proxy shall be voted or acted upon after
three years from the date of its execution, unless the proxy expressly provides
for a longer period.  Any copy, facsimile telecommunication or other reliable
reproduction of the writing or transmission created pursuant to this Section 1.8
may be substituted or used in lieu of the original writing or transmission for
any and all purposes for which the original writing or transmission could be
used,
<PAGE>

                                      -3-

provided that such copy, facsimile telecommunication or reproduction shall be a
complete reproduction of the entire original writing or transmission.

          In the election of directors, voting shall be by written ballot, and
for any other action, voting need not be by ballot.

          The Corporation may, and to the extent required by law or the
Certificate of Incorporation, shall, in advance of any meeting of stockholders,
appoint one or more inspectors to act at such meeting and make a written report
thereof.  The Corporation may designate one or more persons as alternate
inspectors to replace any inspector who fails to act.  If no inspector or
alternate is able to act at a meeting of stockholders, the person presiding at
such meeting may, and to the extent required by law or the Certificate of
Incorporation, shall, appoint one or more inspectors to act at such meeting.
Each inspector, before entering upon the discharge of his duties, shall take and
sign an oath faithfully to execute the duties of inspector with strict
impartiality and according to the best of his or her ability.

          1.9  Action at Meeting.  When a quorum is present at any meeting of
               -----------------
stockholders, the holders of a majority of the stock present or represented and
voting on a matter (or if there are two or more classes of stock entitled to
vote as separate classes, then in the case of each such class, the holders of a
majority of the stock of that class present or represented and voting on such
matter) shall decide any matter to be voted upon by the stockholders at such
meeting (other than the election of directors), except when a different vote is
required by express provision of law, the Certificate of Incorporation or these
By-Laws.  Any election of directors by the stockholders shall be determined by a
plurality of the votes cast by the stockholders entitled to vote at such
election, except as otherwise provided by the Certificate of Incorporation. For
the purposes of this paragraph, Broker Non-Votes represented at the meeting but
not permitted to vote on a particular matter shall not be counted, with respect
to the vote on such matter, in the number of (a) votes cast, (b) votes cast
affirmatively, or (c) votes cast negatively.

          1.10 Introduction of Business at Meetings.
               ------------------------------------

               A.   Annual Meetings of Stockholders.
                    -------------------------------

                    (1)  Nominations of persons for election to the Board of
       Directors and the proposal of business to be considered by the
       stockholders may be made at an annual meeting of stockholders (a)
       pursuant to the Corporation's notice of meeting, (b) by or at the
       direction of the Board of Directors or (c) by any stockholder of the
       Corporation who was a stockholder of record at the time of giving of
       notice provided for in this Section 1.10, who is entitled to vote at the
       meeting and who complies with the notice procedures set forth in this
       Section 1.10.

                    (2)  For nominations or other business to be properly
       brought before an annual meeting by a stockholder pursuant to clause (c)
       of paragraph (A)(1) of this Section 1.10, the stockholder must have given
       timely notice thereof in writing to the Secretary of the Corporation and
       such other business must otherwise be a proper matter for stockholder
       action. To be timely, a stockholder's notice shall be delivered to the
       Secretary at the principal executive offices of the Corporation not later
       than the close of business on the one hundred
<PAGE>

                                      -4-

       twentieth (120th) day nor earlier than the close of business on the one
       hundred fiftieth (150th) day prior to the first anniversary of the date
       of the proxy statement delivered to stockholders in connection with the
       preceding year's annual meeting; provided, however, that if either (i)
       the date of the annual meeting is more than thirty (30) days before or
       more than sixty (60) days after the first anniversary date of the
       preceding year's annual meeting or (ii) no proxy statement was delivered
       to stockholders in connection with the preceding year's annual meeting,
       notice by the stockholder to be timely must be so delivered not earlier
       than the close of business on the ninetieth (90th) day prior to such
       annual meeting and not later than the close of business on the later of
       the sixtieth (60th) day prior to such annual meeting or the close of
       business on the tenth (10th) day following the day on which public
       announcement of the date of such meeting is first made by the
       Corporation. Such stockholder's notice shall set forth (a) as to each
       person whom the stockholder proposes to nominate for election or
       reelection as a director, all information relating to such person that is
       required to be disclosed in solicitations of proxies for election of
       directors, or is otherwise required, in each case pursuant to Regulation
       14A under the Securities Exchange Act of 1934, as amended (the "Exchange
       Act") (including such person's written consent to being named in the
       proxy statement as a nominee and to serving as a director if elected);
       (b) as to any other business that the stockholder proposes to bring
       before the meeting, a brief description of the business desired to be
       brought before the meeting, the reasons for conducting such business at
       the meeting and any material interest in such business of such
       stockholder and the beneficial owner, if any, on whose behalf the
       proposal is made; and (c) as to the stockholder giving the notice and the
       beneficial owner, if any, on whose behalf the nomination or proposal is
       made (i) the name and address of such stockholder, as they appear on the
       Corporation's books, and of such beneficial owner and (ii) the class and
       number of shares of capital stock of the Corporation that are owned
       beneficially and held of record by such stockholder and such beneficial
       owner.

                    (3)  Notwithstanding anything in the second sentence of
       paragraph (A)(2) of this Section 1.10 to the contrary, in the event that
       the number of directors to be elected to the Board of Directors of the
       Corporation is increased and there is no public announcement by the
       Corporation naming all of the nominees for director or specifying the
       size of the increased Board of Directors at least seventy (70) days prior
       to the first anniversary of the preceding year's annual meeting (or, if
       the annual meeting is held more than thirty (30) days before or sixty
       (60) days after such anniversary date, at least seventy (70) days prior
       to such annual meeting), a stockholder's notice required by this Section
       1.10 shall also be considered timely, but only with respect to nominees
       for any new positions created by such increase, if it shall be delivered
       to the Secretary at the principal executive office of the Corporation not
       later than the close of business on the tenth (10th) day following the
       day on which such public announcement is first made by the Corporation.

               B.   Special Meetings of Stockholders.  Only such business shall
                    --------------------------------
       be conducted at a special meeting of stockholders as shall have been
       brought before the meeting pursuant to the Corporation's notice of
       meeting.  Nominations of persons for election to the Board of Directors
       may be made at a special meeting of stockholders at which directors are
       to be elected pursuant to the Corporation's notice of meeting (a) by or
       at the direction of the Board
<PAGE>

                                      -5-

       of Directors or (b) provided that the Board of Directors has determined
       that directors shall be elected at such meeting, by any stockholder of
       the Corporation who is a stockholder of record at the time of giving of
       notice of the special meeting, who shall be entitled to vote at the
       meeting and who complies with the notice procedures set forth in this
       Section 1.10. If the Corporation calls a special meeting of stockholders
       for the purpose of electing one or more directors to the Board of
       Directors, any such stockholder may nominate a person or persons (as the
       case may be), for election to such position(s) as specified in the
       Corporation's notice of meeting, if the stockholder's notice required by
       paragraph (A)(2) of this Section 1.10 shall be delivered to the Secretary
       at the principal executive offices of the Corporation not earlier than
       the ninetieth (90th) day prior to such special meeting nor later than the
       later of (x) the close of business on the sixtieth (60th) day prior to
       such special meeting or (y) the close of business on the tenth (10th) day
       following the day on which public announcement is first made of the date
       of such special meeting and of the nominees proposed by the Board of
       Directors to be elected at such meeting.

C.        General.
          -------

               (1)  Only such persons who are nominated in accordance with the
       procedures set forth in this Section 1.10 shall be eligible to serve as
       directors and only such business shall be conducted at a meeting of
       stockholders as shall have been brought before the meeting in accordance
       with the procedures set forth in this Section 1.10. Except as otherwise
       provided by law, the Certificate of Incorporation or these By-Laws, the
       chairman of the meeting shall have the power and duty to determine
       whether a nomination or any business proposed to be brought before the
       meeting was made or proposed, as the case may be, in accordance with the
       procedures set forth in this Section 1.10 and, if any proposed nomination
       or business is not in compliance herewith, to declare that such defective
       proposal or nomination shall be disregarded.

               (2)  For purposes of this Section 1.10, "public announcement"
       shall mean disclosure in a press release reported by the Dow Jones News
       Service, Associated Press, PR Newswire, Reuters or comparable national
       news service or in a document publicly filed by the Corporation with the
       Securities and Exchange Commission pursuant to Section 13, 14 or 15(d) of
       the Exchange Act.

               (3)  Notwithstanding the foregoing provisions of this Section
       1.10, a stockholder shall also comply with all applicable requirements of
       the Exchange Act and the rules and regulations thereunder with respect to
       the matters set forth herein.  Nothing in this Section 1.10 shall be
       deemed to affect any rights (i) of stockholders to request inclusion of
       proposals in the Corporation's proxy statement pursuant to Rule 14a-8
       under the Exchange Act or (ii) of the holders of any series of Preferred
       Stock to elect directors under specified circumstances.

     1.11  Action without Meeting.  Stockholders of the Corporation may not
           ----------------------
take any action by written consent in lieu of a meeting.  Notwithstanding any
other provision of law, the Certificate of Incorporation or these By-Laws, and
notwithstanding the fact that a lesser percentage may be specified
<PAGE>

                                      -6-

by law, the affirmative vote of the holders of at least sixty-six and two-thirds
percent (66-2/3%) of the votes which all the stockholders would be entitled to
cast at any annual election of directors or class of directors shall be required
to amend or repeal, or to adopt any provision inconsistent with, this Section
1.11.

                             ARTICLE 2 - Directors
                             ---------------------

     2.1  General Powers.  The business and affairs of the Corporation shall be
          --------------
managed by or under the direction of a Board of Directors, who may exercise all
of the powers of the Corporation except as otherwise provided by law or the
Certificate of Incorporation. In the event of a vacancy in the Board of
Directors, the remaining directors, except as otherwise provided by law or the
Certificate of Incorporation, may exercise the powers of the full Board of
Directors until the vacancy is filled. Without limiting the foregoing, the Board
of Directors may:

     (a)  declare dividends from time to time in accordance with law;

     (b)  purchase or otherwise acquire any property, rights or privileges on
  such terms as it shall determine;

     (c)  authorize the creation, making and issuance, in such form as it may
  determine, of written obligations of every kind, negotiable or non-negotiable,
  secured or unsecured, to borrow funds and guarantee obligations, and to do all
  things necessary in connection therewith;

     (d)  remove any officer of the Corporation with or without cause, and from
  time to time to devolve the powers and duties of any officer upon any other
  person for the time being;

     (e)  confer upon any officer of the Corporation the power to appoint,
  remove and suspend subordinate officers, employees and agents;

     (f)  adopt from time to time such stock option, stock purchase, bonus or
  other compensation plans for directors, officers, employees, consultants and
  agents of the Corporation and its subsidiaries as it may determine;

     (g)  adopt from time to time such insurance, retirement, and other benefit
  plans for directors, officers, employees, consultants and agents of the
  Corporation and its subsidiaries as it may determine; and

     (h)  adopt from time to time regulations, not inconsistent herewith, for
  the management of the Corporation's business and affairs.

     2.2  Number; Election and Qualification.  The number of directors which
          ----------------------------------
shall constitute the whole Board of Directors shall be determined by resolution
of the Board of Directors, but in no event shall be less than three. The number
of directors may be decreased at any time and from time to time by a majority of
the directors then in office, but only to eliminate vacancies existing by reason
of the death,
<PAGE>

                                      -7-

resignation, removal or expiration of the term of one or more directors. The
directors shall be elected at the annual meeting of stockholders (or, if so
determined by the Board of Directors pursuant to Section 10 hereof, at a special
meeting of stockholders), by such stockholders as have the right to vote on such
election. Directors need not be stockholders of the Corporation.

     2.3  Classes of Directors.  The Board of Directors shall be and is divided
          --------------------
into three classes: Class I, Class II and Class III. No one class shall have
more than one director more than any other class.

     2.4  Terms in Office.  Each director shall serve for a term ending on the
          ---------------
date of the third annual meeting following the annual meeting at which such
director was elected; provided, however, that each initial director in Class I
shall serve for a term ending on the date of the annual meeting next following
the end of the Corporation's fiscal year ending July 1, 2000; each initial
director in Class II shall serve for a term ending on the date of the annual
meeting next following the end of the Corporation's fiscal year ending June 30,
2001; and each initial director in Class III shall serve for a term ending on
the date of the annual meeting next following the end of the Corporation's
fiscal year ending June 29, 2002.

     2.5  Allocation of Directors Among Classes in the Event of Increases or
          ------------------------------------------------------------------
Decreases in the Number of Directors.  In the event of any increase or decrease
------------------------------------
in the authorized number of directors, (i) each director then serving as such
shall nevertheless continue as a director of the class of which he or she is a
member until the expiration of such director's current term or his or her prior
death, removal or resignation and (ii) the newly created or eliminated
directorships resulting from such increase or decrease shall be apportioned by
the Board of Directors among the three classes of directors, subject to the
second sentence of Section 2.3. To the extent possible, consistent with the
foregoing rule, any newly created directorships shall be added to those classes
whose terms of office are to expire at the earliest dates following such
allocation, unless otherwise provided for from time to time by resolution
adopted by a majority of the directors then in office, although less than a
quorum. No decrease in the number of directors constituting the whole Board of
Directors shall shorten the term of an incumbent Director.

     2.6  Tenure.  Notwithstanding any provisions to the contrary contained
          ------
herein, each director shall hold office until his or her successor is elected
and qualified, or until his or her earlier death, resignation or removal.

     2.7  Vacancies.  Unless and until filled by the stockholders, any vacancy
          ---------
in the Board of Directors, however occurring, including a vacancy resulting from
an enlargement thereof, may be filled by vote of a majority of the directors
then in office, although less than a quorum, or by a sole remaining director. A
director elected to fill a vacancy shall be elected for the unexpired term of
his or her predecessor in office, if any, and a director chosen to fill a
position resulting from an increase in the number of directors shall hold office
until the next election of directors of the class for which such director was
chosen and until his or her successor is elected and qualified, or until his or
her earlier death, resignation or removal.

     2.8  Resignation.  Any director may resign by delivering his or her
          -----------
written resignation to the Corporation at its principal office or to the
President or Secretary.  Such resignation shall be effective
<PAGE>

                                      -8-

upon receipt unless it is specified to be effective at some other time or upon
the happening of some other event.

     2.9  Regular Meetings.  Regular meetings of the Board of Directors may be
          ----------------
held without notice at such time and place, either within or without the State
of Delaware, as shall be determined from time to time by the Board of Directors;
provided that any director who is absent when such a determination is made shall
be given notice of the determination.

     2.10 Special Meetings.  Special meetings of the Board of Directors may be
          ----------------
held at any time and place, within or without the State of Delaware, designated
in a call by the Chairman of the Board (if any), the President, two or more
directors, or by one director in the event that there is only a single director
in office.

     2.11 Notice of Special Meetings.  Notice of any special meeting of
          --------------------------
directors shall be given to each director by the Secretary or by the officer or
one of the directors calling the meeting.  Notice shall be duly given to each
director (i) by giving notice to such director in person or by telephone at
least forty-eight (48) hours in advance of the meeting, (ii) by sending a
telegram or delivering written notice by facsimile transmission or by hand, to
his or her last known business or home address at least forty-eight (48) hours
in advance of the meeting, or (iii) by mailing written notice to his or her last
known business or home address at least seventy-two (72) hours in advance of the
meeting.  A notice or waiver of notice of a meeting of the Board of Directors
need not specify the purposes of the meeting.

     2.12 Meetings by Telephone Conference Calls.  Directors or any members of
          --------------------------------------
any committee designated by the Board of Directors may participate in a meeting
of the Board of Directors or such committee by means of conference telephone or
similar communications equipment by means of which all persons participating in
the meeting can hear each other, and participation by such means shall be deemed
to constitute presence in person at such meeting.

     2.13 Quorum.  A majority of the total number of the whole Board of
          ------
Directors shall constitute a quorum at all meetings of the Board of Directors.
In the event one or more of the directors shall be disqualified to vote at any
meeting, then the required quorum shall be reduced by one for each such director
so disqualified; provided, however, that in no case shall less than one-third
(1/3) of the total number of the whole Board of Directors constitute a quorum.
In the absence of a quorum at any such meeting, a majority of the directors
present may adjourn the meeting from time to time without further notice other
than announcement at the meeting, until a quorum shall be present.

     2.14 Action at Meeting.  At any meeting of the Board of Directors at which
          -----------------
a quorum is present, the vote of a majority of those present shall be sufficient
to take any action, unless a different vote is specified by law, the Certificate
of Incorporation or these By-Laws.

     2.15 Action by Written Consent.  Any action required or permitted to be
          -------------------------
taken at any meeting of the Board of Directors or of any committee of the
Board of Directors may be taken without a meeting, if all members of the Board
of Directors or committee, as the case may be, consent to such action in
writing, and the written consents are filed with the minutes of proceedings of
the Board of Directors or committee.
<PAGE>

                                      -9-

     2.16  Removal.  Unless otherwise provided in the Certificate of
           -------
Incorporation, any one or more or all of the directors may be removed with cause
only by the holders of at least sixty-six and two-thirds percent (66-2/3%) of
the shares then entitled to vote at an election of directors.  Directors may not
be removed without cause.

     2.17  Committees.  The Board of Directors may, by resolution passed by a
           ----------
majority of the whole Board, designate one or more committees, each committee
to consist of one or more of the directors of the Corporation.  The Board of
Directors may designate one or more directors as alternate members of any
committee, who may replace any absent or disqualified member at any meeting of
such committee.  In the absence or disqualification of a member of a committee,
the member or members of such committee present at any meeting and not
disqualified from voting, whether or not such member or members constitute a
quorum, may unanimously appoint another member of the Board of Directors to act
at such meeting in the place of any such absent or disqualified member.  Any
such committee, to the extent provided in the resolution of the Board of
Directors and subject to the provisions of the General Corporation Law of the
State of Delaware, shall have and may exercise all the powers and authority of
the Board of Directors in the management of the business and affairs of the
Corporation and may authorize the seal of the Corporation to be affixed to all
papers which may require it.  Each such committee shall keep minutes and make
such reports as the Board of Directors may from time to time request.  Except as
the Board of Directors may otherwise determine or as provided herein, any
committee may make rules for the conduct of its business, but unless otherwise
provided by the directors or in such rules, its business shall be conducted as
nearly as possible in the same manner as is provided in these By-Laws for the
Board of Directors.  Adequate provisions shall be made for notice to members of
all meeting of committees.  One-third (1/3) of the members of any committee
shall constitute a quorum unless the committee shall consist of one (1) or two
(2) members, in which event one (1) member shall constitute a quorum; and all
matters shall be determined by a majority vote of the members present.  Action
may be taken by any committee without a meeting if all members thereof consent
thereto in writing, and the writing or writings are filed with the minutes of
the proceedings of such committee.

     2.18 Compensation of Directors.  Directors may be paid such compensation
          -------------------------
for their services and such reimbursement for expenses of attendance at meetings
as the Board of Directors may from time to time determine. No such payment shall
preclude any director from serving the Corporation or any of its parent or
subsidiary corporations in any other capacity and receiving compensation for
such service.

     2.19 Amendments to Article.  Notwithstanding any other provisions of law,
          ---------------------
the Certificate of Incorporation or these By-Laws, and notwithstanding the fact
that a lesser percentage may be specified by law, the affirmative vote of the
holders of a least sixty-six and two-thirds percent (66-2/3%) of the votes which
all the stockholders would be entitled to cast at any annual election of
directors or class of directors shall be required to amend or repeal, or to
adopt any provision inconsistent with, this Article 2.
<PAGE>

                                      -10-


                             ARTICLE 3 - Officers
                             --------------------


     3.1  Enumeration.  The officers of the Corporation shall consist of a
          -----------
President, a Secretary, a Treasurer and such other officers with such other
titles as the Board of Directors shall determine, including, but not limited to,
a Chairman of the Board, a Vice-Chairman of the Board, and one or more Vice
Presidents, Assistant Treasurers and Assistant Secretaries. The Board of
Directors may appoint such other officers as it may deem appropriate.

     3.2  Election.  The President, Treasurer and Secretary shall be elected
          --------
annually by the Board of Directors at its first meeting following the annual
meeting of stockholders. Other officers may be appointed by the Board of
Directors at such meeting or at any other meeting.

     3.3  Qualification.  No officer need be a stockholder.  Any two or more
          -------------
offices may be held by the same person.

     3.4  Tenure.  Except as otherwise provided by law, by the Certificate of
          ------
Incorporation or by these By-Laws, each officer shall hold office until his or
her successor is elected and qualified, unless a different term is specified in
the vote choosing or appointing such officer, or until his or her earlier death,
resignation or removal.

     3.5  Resignation and Removal.  Any officer may resign by delivering his or
          -----------------------
her written resignation to the Chairman of the Board (if any), to the Board of
Directors at a meeting thereof, to the Corporation at its principal office or to
the President or Secretary. Such resignation shall be effective upon receipt
unless it is specified to be effective at some other time or upon the happening
of some other event.

     Any officer may be removed at any time, with or without cause, by vote of a
majority of the entire number of directors then in office.

     Except as the Board of Directors may otherwise determine, no officer who
resigns or is removed shall have any right to any compensation as an officer for
any period following his or her resignation or removal, or any right to damages
on account of such removal, whether his or her compensation be by the month or
by the year or otherwise, unless such compensation is expressly provided in a
duly authorized written agreement with the Corporation.

     3.6  Vacancies.  The Board of Directors may fill any vacancy occurring in
          ---------
any office for any reason and may, in its discretion, leave unfilled for such
period as it may determine any offices other than those of President, Treasurer
and Secretary. Each such successor shall hold office for the unexpired term of
his predecessor and until his or her successor is elected and qualified, or
until his or her earlier death, resignation or removal.

     3.7  Chairman of the Board and Vice-Chairman of the Board.  The Chairman
          ----------------------------------------------------
of the Board, if any, shall preside at all meetings of the Board of Directors
and stockholders at which he or she is present and shall perform such duties and
possess such powers as are designated by the Board of
<PAGE>

                                      -11-

Directors. If the Board of Directors appoints a Vice-Chairman of the Board, he
or she shall, in the absence or disability of the Chairman of the Board, perform
the duties and exercise the powers of the Chairman of the Board and shall
perform such other duties and possess such other powers as may from time to time
be designated by the Board of Directors.

     3.8   President.  The President shall, subject to the direction of the
           ---------
Board of Directors, have general charge and supervision of the business of the
Corporation. Unless otherwise provided by the Board of Directors, and provided
that there is no Chairman of the Board or that the Chairman and Vice-Chairman,
if any, are not available, the President shall preside at all meetings of the
stockholders, and, if a director, at all meetings of the Board of Directors.
Unless the Board of Directors has designated another officer as the Chief
Executive Officer, the President shall be the Chief Executive Officer of the
Corporation. The President shall perform such other duties and shall have such
other powers as the Board of Directors may from time to time prescribe. The
President shall have the power to enter into contracts and otherwise bind the
Corporation in matters arising in the ordinary course of the Corporation's
business.

     3.9   Vice Presidents.  Any Vice President shall perform such duties and
           ---------------
possess such powers as the Board of Directors or the President may from time to
time prescribe. In the event of the absence, inability or refusal to act of the
President, the Vice President (or if there shall be more than one, the Vice
Presidents in the order determined by the Board of Directors) shall perform the
duties of the President and, when so performing, shall have all the powers of
and be subject to all the restrictions upon the President. The Board of
Directors may assign to any Vice President the title of Executive Vice
President, Senior Vice President or any other title selected by the Board of
Directors. Unless otherwise determined by the Board of Directors, any Vice
President shall have the power to enter into contracts and otherwise bind the
Corporation in matters arising in the ordinary course of the Corporation's
business.

     3.10  Secretary and Assistant Secretaries. The Secretary shall perform such
           -----------------------------------
duties and shall have such powers as the Board of Directors or the President may
from time to time prescribe. In addition, the Secretary shall perform such
duties and have such powers as are incident to the office of secretary,
including without limitation the duty and power to give notices of all meetings
of stockholders and special meetings of the Board of Directors, to attend all
meetings of stockholders and the Board of Directors and keep a record of the
proceedings, to maintain a stock ledger and prepare lists of stockholders and
their addresses as required, to be custodian of corporate records and the
corporate seal and to affix and attest to the same on documents.

     Any Assistant Secretary shall perform such duties and possess such powers
as the Board of Directors, the President or the Secretary may from time to time
prescribe. In the event of the absence, inability or refusal to act of the
Secretary, the Assistant Secretary (or if there shall be more than one, the
Assistant Secretaries in the order determined by the Board of Directors) shall
perform the duties and exercise the powers of the Secretary.

     In the absence of the Secretary or any Assistant Secretary at any meeting
of stockholders or directors, the person presiding at the meeting shall
designate a temporary secretary to keep a record of the meeting.
<PAGE>

                                      -12-

     3.11  Treasurer and Assistant Treasurers. The Treasurer shall perform such
           ----------------------------------
duties and shall have such powers as the Board of Directors or the President may
from time to time prescribe. In addition, the Treasurer shall perform such
duties and have such powers as are incident to the office of treasurer,
including without limitation the duty and power to keep and be responsible for
all funds and securities of the Corporation, to deposit funds of the Corporation
in depositories selected in accordance with these By-Laws, to disburse such
funds as ordered by the Board of Directors, to make proper accounts for such
funds, and to render as required by the Board of Directors statements of all
such transactions and of the financial condition of the Corporation.

     The Assistant Treasurers shall perform such duties and possess such powers
as the Board of Directors, the President or the Treasurer may from time to time
prescribe. In the event of the absence, inability or refusal to act of the
Treasurer, the Assistant Treasurer (or if there shall be more than one, the
Assistant Treasurers in the order determined by the Board of Directors) shall
perform the duties and exercise the powers of the Treasurer.

     3.12  Salaries.  Officers of the Corporation shall be entitled to such
           --------
salaries, compensation or reimbursement as shall be fixed or allowed from time
to time by the Board of Directors.

     3.13  Action with Respect to Securities of Other Corporations.  Unless
           -------------------------------------------------------
otherwise directed by the Board of Directors, the President or any officer of
the Corporation authorized by the President, shall have power to vote and
otherwise act on behalf of the Corporation, in person or by proxy, at any
meeting of stockholders of or with respect to any action of stockholders of any
other corporation in which the Corporation may hold securities and otherwise to
exercise any and all rights and powers which this Corporation may possess by
reason of its ownership of securities in such other corporation.


                           ARTICLE 4 - Capital Stock
                           -------------------------

     4.1   Issuance of Stock. Unless otherwise voted by the stockholders and
           -----------------
subject to the provisions of the Certificate of Incorporation, the whole or any
part of any unissued balance of the authorized capital stock of the Corporation
or the whole or any part of any issued, authorized capital stock of the
Corporation held in its treasury may be issued, sold, transferred or otherwise
disposed of by vote of the Board of Directors in such manner, for such
consideration and on such terms as the Board of Directors may determine.

     4.2   Certificates of Stock.  Every holder of stock of the Corporation
           ---------------------
shall be entitled to have a certificate, in such form as may be prescribed by
law and by the Board of Directors, certifying the number and class of shares
owned by such stockholder in the Corporation. Each such certificate shall be
signed by, or in the name of the Corporation by, the Chairman or Vice-Chairman,
if any, of the Board of Directors, or the President or a Vice President, and the
Treasurer or an Assistant Treasurer, or the Secretary or an Assistant Secretary
of the Corporation. Any or all of the signatures on such certificate may be a
facsimile.
<PAGE>

                                      -13-

     Each certificate for shares of stock which are subject to any restriction
on transfer pursuant to the Certificate of Incorporation, the By-Laws,
applicable securities laws or any agreement among any number of shareholders or
among such holders and the Corporation shall have conspicuously noted on the
face or back of such certificate either the full text of such restriction or a
statement of the existence of such restriction.

     4.3  Transfers. Except as otherwise established by rules and regulations
          ---------
adopted by the Board of Directors, and subject to applicable law, shares of
stock may be transferred on the books of the Corporation by the surrender to the
Corporation or its transfer agent of the certificate representing such shares,
properly endorsed or accompanied by a written assignment or power of attorney
properly executed, and with such proof of authority or the authenticity of
signature as the Corporation or its transfer agent may reasonably require.
Except as may be otherwise required by law, by the Certificate of Incorporation
or by these By-Laws, the Corporation shall be entitled to treat the record
holder of stock as shown on its books as the owner of such stock for all
purposes, including the payment of dividends and the right to vote with respect
to such stock, regardless of any transfer, pledge or other disposition of such
stock, until the shares have been transferred on the books of the Corporation in
accordance with the requirements of these By-Laws.

     4.4  Lost, Stolen or Destroyed Certificates. The Corporation may issue a
          --------------------------------------
new certificate of stock in place of any previously issued certificate alleged
to have been lost, stolen, or destroyed, upon such terms and conditions as the
President may prescribe, including the presentation of reasonable evidence of
such loss, theft or destruction and the giving of such indemnity as the
President may require for the protection of the Corporation or any transfer
agent or registrar.

     4.5  Record Date. The Board of Directors may fix in advance a date as a
          -----------
record date for the determination of the stockholders entitled to notice of or
to vote at any meeting of stockholders or, to the extent permitted by the
Certificate of Incorporation and these By-laws, to express consent (or dissent)
to corporate action in writing without a meeting, or entitled to receive payment
of any dividend or other distribution or allotment of any rights in respect of
any change, conversion or exchange of stock, or for the purpose of any other
lawful action. Such record date shall not be more than 60 nor less than 10 days
before the date of such meeting, nor more than 60 days prior to any other action
to which such record date relates.

     If no record date is fixed, the record date for determining stockholders
entitled to notice of or to vote at a meeting of stockholders shall be at the
close of business on the day before the day on which notice is given, or, if
notice is waived, at the close of business on the day before the day on which
the meeting is held. The record date for determining stockholders entitled to
express consent to corporate action in writing without a meeting (to the extent
permitted by the Certificate of Incorporation and these By-laws) when no prior
action by the Board of Directors is necessary, shall be the day on which the
first written consent is expressed. The record date for determining stockholders
for any other purpose shall be at the close of business on the day on which the
Board of Directors adopts the resolution relating to such purpose.
<PAGE>

                                      -14-

     A determination of stockholders of record entitled to notice of or to vote
at a meeting of stockholders shall apply to any adjournment of the meeting;
provided, however, that the Board of Directors may fix a new record date for the
adjourned meeting.


                        ARTICLE 5 - General Provisions
                        ------------------------------

     5.1  Fiscal Year. The fiscal year of the Corporation shall be fixed by
          -----------
resolution of the Board of Directors.

     5.2  Corporate Seal. The corporate seal shall be in such form as shall be
          --------------
approved by the Board of Directors.

     5.3  Notices. Except as otherwise specifically provided herein or required
          -------
by law or the Certificate of Incorporation, all notices required to be given to
any person pursuant to these by-laws shall be in writing and may in every
instance be effectively given by hand delivery to the recipient thereof, by
depositing such notice in the mails, postage paid, or by sending such notice by
prepaid telegram or facsimile transmission. Any such notice shall be addressed
to such person at his or her last known address as the same appears on the books
of the Corporation. The time when such notice is received shall be deemed to be
the time of the giving of the notice.

     5.4  Waiver of Notice. Whenever any notice whatsoever is required to be
          ----------------
given by law, by the Certificate of Incorporation or by these By-Laws, a waiver
of such notice either in writing signed by the person entitled to such notice or
such person's duly authorized attorney, or by telegraph, facsimile transmission
or any other available method, whether before, at or after the time stated in
such waiver, or the appearance of such person or persons at such meeting in
person or by proxy, shall be deemed equivalent to such notice.

     5.5  Evidence of Authority. A certificate by the Secretary, or an Assistant
          ---------------------
Secretary, or a temporary Secretary, as to any action taken by the stockholders,
directors, a committee or any officer or representative of the Corporation
shall, as to all persons who rely on the certificate in good faith, be
conclusive evidence of such action.

     5.6  Facsimile Signatures. In addition to the provisions for use of
          --------------------
facsimile signatures elsewhere specifically authorized in these By-Laws,
facsimile signatures of any officer or officers of the Corporation may be used
whenever and as authorized by the Board of Directors or a committee thereof.

     5.7  Reliance upon Books, Reports and Records. Each director, each member
          ----------------------------------------
of any committee designated by the Board of Directors, and each officer of the
Corporation shall, in the performance of his or her duties, be fully protected
in relying in good faith upon the books of account or other records of the
Corporation and upon such information, opinions, reports or statements presented
to the Corporation by any of its officers or employees or committees of the
Board of Directors so designated, or by any other person as to matters which
such director or committee member reasonably believes are within such other
person's professional or expert competence and who has been selected with
reasonable care by or on behalf of the Corporation.
<PAGE>

                                      -15-

     5.8   Time Periods. In applying any provision of these By-Laws that
           ------------
requires that an act be done or not be done a specified number of days prior to
an event or that an act be done during a period of a specified number of days
prior to an event, calendar days shall be used, the day of the doing of the act
shall be excluded, and the day of the event shall be included.

     5.9   Certificate of Incorporation. All references in these By-Laws to the
           ----------------------------
Certificate of Incorporation shall be deemed to refer to the Certificate of
Incorporation of the Corporation, as amended and in effect from time to time.

     5.10  Transactions with Interested Parties. No contract or transaction
           ------------------------------------
between the Corporation and one or more of the directors or officers, or between
the Corporation and any other corporation, partnership, association, or other
organization in which one or more of the directors or officers are directors or
officers, or have a financial interest, shall be void or voidable solely for
this reason, or solely because such director or officer is present at or
participates in the meeting of the Board of Directors or a committee of the
Board of Directors which authorizes the contract or transaction or solely
because his, her or their votes are counted for such purpose, if:

     (1)   The material facts as to his or her relationship or interest and as
     to the contract or transaction are disclosed or are known to the Board of
     Directors or the committee, and the Board or committee in good faith
     authorizes the contract or transaction by the affirmative vote of a
     majority of the disinterested directors, even though the disinterested
     directors be less than a quorum;

     (2)   The material facts as to his or her relationship or interest and as
     to the contract or transaction are disclosed or are known to the
     stockholders entitled to vote thereon, and the contract or transaction is
     specifically approved in good faith by vote of the stockholders; or

     (3)   The contract or transaction is fair as to the Corporation as of the
     time it is authorized, approved or ratified, by the Board of Directors, a
     committee of the Board of Directors, or the stockholders.

     Common or interested directors may be counted in determining the presence
of a quorum at a meeting of the Board of Directors or of a committee which
authorizes the contract or transaction.

     5.11  Severability. Any determination that any provision of these By-Laws
           ------------
is for any reason inapplicable, illegal or ineffective shall not affect or
invalidate any other provision of these By-Laws.

     5.12  Pronouns. All pronouns used in these By-Laws shall be deemed to refer
           --------
to the masculine, feminine or neuter, singular or plural, as the identity of the
persons or persons so designated may require.
<PAGE>

                                      -16-

                            ARTICLE 6 - Amendments
                            ----------------------

     6.1  By the Board of Directors. Except as is otherwise set forth in these
          -------------------------
By-Laws, these By-Laws may be altered, amended or repealed, or new by-laws may
be adopted, by the affirmative vote of a majority of the directors present at
any regular or special meeting of the Board of Directors at which a quorum is
present.

     6.2  By the Stockholders. Except as otherwise set forth in these By-Laws,
          -------------------
these By-Laws may be altered, amended or repealed or new by-laws may be adopted
by the affirmative vote of the holders of sixty-six and two-thirds percent (66-
2/3%) of the shares of the capital stock of the Corporation issued and
outstanding and entitled to vote at any regular meeting of stockholders, or at
any special meeting of stockholders, provided notice of such alteration,
amendment, repeal or adoption of new by-laws shall have been stated in the
notice of such special meeting.


                          ARTICLE 7 - Indemnification
                          ---------------------------

     7.1  Actions Other Than by or in the Right of the Corporation. The
          --------------------------------------------------------
Corporation shall indemnify and hold harmless, to the fullest extent permitted
by applicable law as it presently exists or may hereafter be amended, any person
who was or is a party or is threatened to be made a party or is otherwise
involved in any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action
by or in the right of the Corporation) by reason of the fact that such person,
or a person for whom such person is the legal representative, is or was a
director, trustee, partner, officer, employee or agent of the Corporation, or is
or was serving at the request of the Corporation as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise or non-profit entity, against all liability, losses, expenses
(including attorneys' fees), judgments, fines, and amounts paid in settlement
actually and reasonably incurred by such person in connection with such action,
suit or proceeding if such person acted in good faith and in a manner he or she
reasonably believed to be in or not opposed to the best interest of the
Corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his or her conduct was unlawful. The termination of
any action, suit or proceeding by judgment, order, settlement, conviction, or
upon a plea of nolo contendere or its equivalent, shall not, of itself, create a
presumption that such person did not act in good faith and in a manner which he
or she reasonably believed to be in or not opposed to the best interest of the
Corporation, and, with respect to any criminal action or proceeding, had
reasonable cause to believe that his or her conduct was unlawful.

     7.2  Actions by or in the Right of the Corporation.  The Corporation
          ---------------------------------------------
shall indemnify any person who was or is a party or is threatened to be made a
party to any threatened, pending or completed action or suit by or in the right
of the Corporation to procure a judgment in its favor by reason of the fact that
he or she is or was a director, trustee, partner, officer, employee or agent of
the Corporation, or is or was serving at the request of the Corporation as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise or non-profit entity against expenses
(including attorneys' fees) actually and reasonably incurred by him or her in
connection with the defense or settlement of such action or suit if such person
acted in good faith and in a manner such person reasonably believed to be in or
not opposed to the best interests of the Corporation; except that no
<PAGE>

                                      -17-

indemnification shall be made in respect of any claim, issue or matter as to
which such person shall have been adjudged to be liable for negligence or
misconduct in the performance of his duty to the Corporation unless and only to
the extent that the Court of Chancery of the State of Delaware or the court in
which such action or suit was brought shall determine upon application that
despite the adjudication of liability but in view of all the circumstances of
the case, such person fairly and reasonably entitled to indemnity for such
expenses which the Court of Chancery of the State of Delaware or such other
court shall deem proper.

     7.3  Success on the Merits. To the extent that any person referred to in
          ---------------------
Sections 7.1 or 7.2 has been successful on the merits or otherwise in defense of
any action, suit or proceeding referred to therein, or in defense of any claim,
issue or matter therein, he or she shall be indemnified against expenses
(including attorneys' fees) actually and reasonably incurred by him or her in
connection therewith.

     7.4. Authorization. Any indemnification under Sections 7.1, 7.2 or 7.3
          -------------
(unless ordered by a court) shall be made by the Corporation only as authorized
in the specific case upon a determination that indemnification of the director,
trustee, partner, officer, employee or agent is proper in the circumstances
because he has met the applicable standard of conduct set forth in Sections 7.1
and 7.2. Such determination shall be made: (a) by the Board of Directors, by a
majority vote of directors who are not parties to such action, suit or
proceeding (whether or not a quorum), or (b) if there are no disinterested
directors or if a majority of disinterested directors so directs, by independent
legal counsel (who may be regular legal counsel to the corporation) in a written
opinion, or (c) by the stockholders.

     7.5  Expense Advance. Expenses (including attorneys' fees) incurred by an
          ---------------
officer or director of the Corporation in defending any pending or threatened
civil, criminal, administrative or investigative action, suit or proceeding may
be paid by the Corporation in advance of the final disposition of such action,
suit or proceeding as authorized by the Board of Directors in the manner
provided in Section 7.4 of this Article upon receipt of an undertaking by or on
behalf of such officer or director to repay such amount, if it shall ultimately
be determined that he is not entitled to be indemnified by the Corporation as
authorized in this Article. Such expenses (including attorneys' fees) incurred
by other employees or agents of the Corporation may be so paid upon such terms
and conditions, if any, as the Board of Directors deems appropriate.

     7.6  Nonexclusivity.  The indemnification and advancement of expenses
          --------------
provided by, or granted pursuant to, the other Sections of this Article shall
not be deemed exclusive of any other rights to which any person seeking
indemnification or advancement of expenses may be entitled under any statute,
by-law, agreement, vote of stockholders or disinterested directors or otherwise,
both as to action in his or her official capacity and as to action in another
capacity while holding such office, and shall continue as to a person who has
ceased to be a director, officer, employee or agent and shall inure to the
benefit of the heirs, executors and administrators of such a person.

     7.7  Insurance. The Corporation shall have power to purchase and maintain
          ---------
insurance on behalf of any person who is or was a director, officer, employee or
agent of the Corporation, or is or was serving at the request of the Corporation
as a director, trustee, partner, officer, employee or agent of another
corporation, partnership, joint venture, trust or other enterprise or non-profit
entity against any
<PAGE>

                                      -18-

liability asserted against and incurred by such person in any such capacity, or
arising out of his or her status as such, whether or not the Corporation would
have the power to indemnify such person against such liability under the
provisions of this Article or Section 145 of the Delaware General Corporation
Law.

     7.8   "The Corporation". For the purposes of this Article, references to
           -----------------
"the Corporation" shall include the resulting corporation and, to the extent
that the Board of Directors of the resulting corporation so decides, all
constituent corporations (including any constituent of a constituent) absorbed
in a consolidation or merger which, if its separate existence had continued,
would have had power and authority to indemnify its directors, officers and
employees or agents so that any person who is or was a director, officer,
employee or agent of such a constituent corporation or is or was serving at the
request of such constituent corporation as director, trustee, partner, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise or non-profit entity shall stand in the same position under the
provisions of this Article with respect to the resulting or surviving
corporation as he or she would have with respect to such constituent corporation
if its separate existence had continued.

     7.9   Other Indemnification. The Corporation's obligation, if any, to
           ---------------------
indemnify any person who was or is serving at its request as a director,
trustee, partner, officer, employee or agent of another corporation,
partnership, joint venture, trust or other enterprise or non-profit entity shall
be reduced by any amount such person may collect as indemnification from such
other corporation, partnership, joint venture, trust or other enterprise or non-
profit entity or from insurance.

     7.10  Other Definitions. For purposes of this Article, references to "other
           -----------------
enterprises" shall include employee benefit plans; references to "fines" shall
include any excise taxes assessed on a person with respect to an employee
benefit plan; and references to "serving at the request of the Corporation"
shall include any service as a director, trustee, officer, employee or agent of
the Corporation which imposes duties on, or involves services by, such director,
trustee, officer, employee, or agent with respect to an employee benefit plan,
its participants, or beneficiaries; and a person who acted in good faith and in
a manner he reasonably believed to be in the interest of the participants and
beneficiaries of an employee benefit plan shall be deemed to have acted in a
manner "not opposed to the best interests of the Corporation" as referred to in
this Article.

     7.11  Continuation of Indemnification. The indemnification and advancement
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of expenses provided by, or granted pursuant to, this Article shall, unless
otherwise provided when authorized or ratified, continue as a person who has
ceased to be a director, trustee, partner, officer, employee or agent and shall
inure to the benefit of the heirs, executors and administrators of such a
person.