Document:

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                                                                    Exhibit 4.2

                                    CVC, INC.

                   AMENDED AND RESTATED 1997 STOCK OPTION PLAN

                                    ARTICLE I

                                     PURPOSE

            This CVC, Inc. Amended and Restated 1997 Stock Option Plan is
intended to advance the interests of the Company and its stockholders and
subsidiaries by attracting, retaining and motivating the performance of selected
officers, employees and consultants of the Company of high caliber and potential
upon whose judgment, initiative and effort the Company is largely dependent for
the successful conduct of its business, and to encourage and enable such persons
to acquire and retain a proprietary interest in the Company by ownership of its
stock. Options granted under the Plan may either be "incentive stock options"
intended to qualify as such under the Internal Revenue Code, or "nonqualified
stock options," which are not intended to so qualify. The Plan, as amended and
restated provided herein, is effective as of September 30, 1999, subject to the
approval of the Plan by the holders of at least a majority of the outstanding
shares of Common Stock.

                                   ARTICLE II

                                   DEFINITIONS

            (a) "Board" means the Board of Directors of the Company.

            (b) "Code" means the Internal Revenue Code of 1986, as amended.

            (c) "Common Stock" means the Company's Common Stock, par value $.01
per share.

            (d) "Committee" means the Compensation Committee of the Board or any
other committee of the Board appointed by the Board to administer the Plan from
time to time.

            (e) "Company" means CVC, Inc., a Delaware corporation.

            (f) "Date of Grant" means the date on which an Option becomes
effective in accordance with Section 6.1 hereof.

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            (g) "Eligible Person" means any person who is an officer, employee
or consultant of the Company or any Subsidiary, or any person who is determined
by the Committee to be a prospective officer, employee or consultant of the
Company or any Subsidiary.

            (h) "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

            (i) "Fair Market Value" of a share of Common Stock as of a given
date means the closing sales price of the Common Stock on the Nasdaq National
Market on the trading day immediately preceding the date as of which Fair Market
Value is to be determined or, in the absence of any reported sales of Common
Stock on such date, on the first preceding date on which any such sale shall
have been reported. If Common Stock is not listed on the Nasdaq National Market
on the date as of which Fair Market Value is to be determined, the Committee
shall determine in good faith the Fair Market Value in whatever manner it
considers appropriate.

            (j) "Incentive Stock Option" means a stock option granted under the
Plan that is intended to meet the requirements of Section 422 of the Code and
the regulations promulgated thereunder.

            (k) "Nonqualified Stock Option" means a stock option granted under
the Plan that is not an Incentive Stock Option.

            (l) "Option" means an Incentive Stock Option or a Nonqualified Stock
Option granted under the Plan.

            (m) "Optionee" means an Eligible Person to whom an Option has been
granted, which Option has not expired, under the Plan.

            (n) "Option Price" means the price at which each share of Common
Stock subject to an Option may be purchased, determined in accordance with
Section 6.2 hereof.

            (o) "Plan" means this CVC, Inc. Amended and Restated 1997 Stock
Option Plan.

            (p) "Stock Option Agreement" means an agreement between the Company
and an Optionee under which the Optionee may purchase Common Stock under the
Plan.

            (q) "Subsidiary" means a subsidiary corporation of the Company,
within the meaning of Section 424(f) of the Code.

            (r) "Ten Percent Owner" means an Optionee who, at the time an
Incentive Stock Option is granted, owns stock possessing more than ten percent
of the total combined voting power of all classes of stock of the Company, its
parent, if any, or any Subsidiary, within the meaning of Sections 422(b)(6) and
424(d) of the Code.

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                                   ARTICLE III

                                   ELIGIBILITY

            All Eligible Persons are eligible to receive a grant of an Option
under the Plan. The Committee shall, in its sole discretion, determine and
designate from time to time those Eligible Persons who are to be granted an
Option.

                                   ARTICLE IV

                                 ADMINISTRATION

            4.1 Committee Members. The Plan shall be administered by a Committee
comprised of no fewer than two persons selected by the Board. Solely to the
extent deemed necessary or advisable by the Board, each Committee member shall
meet the definition of a "nonemployee director" for purposes of such Rule 16b-3
under the Exchange Act and of an "outside director" under Section 162(m) of the
Code. The Board shall also have the authority to exercise the powers and duties
of the Committee under the Plan.

            4.2 Committee Authority. Subject to the express provisions of the
Plan, the Committee shall have the authority, in its discretion, to determine
the Eligible Persons to whom an Option shall be granted, the time or times at
which an Option shall be granted, the number of shares of Common Stock subject
to each Option, the Option Price of the shares subject to each Option and the
time or times when each Option shall become exercisable and the duration of the
exercise period. Subject to the express provisions of the Plan, the Committee
shall also have discretionary authority to interpret the Plan, to prescribe,
amend and rescind rules and regulations relating to it, to determine the details
and provisions of each Stock Option Agreement, and to make all the
determinations necessary or advisable in the administration of the Plan. All
such actions and determinations by the Committee shall be conclusively binding
for all purposes and upon all persons. No Committee member shall be liable for
any action or determination made in good faith with respect to the Plan, any
Option or any Stock Option Agreement entered into hereunder.

            4.3 Delegation of Authority. The Committee shall have the right,
from time to time, to delegate to one or more officers of the Company the
authority of the Committee to grant and determine the terms and conditions of
Options awarded under the Plan, subject to such limitations as the Committee
shall determine; provided, however, that no such authority may be delegated with
respect to Options awarded to any Optionee who the Committee determines may be
subject to Rule 16b-3 under the Exchange Act or Section 162(m) of the Code.

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                                    ARTICLE V

                         SHARES OF STOCK SUBJECT TO PLAN

            5.1 Number of Shares. Subject to adjustment pursuant to the
provisions of Section 5.2 hereof, the number of shares of Common Stock which may
be issued and sold hereunder shall initially be 2,750,000 shares, provided that,
effective as of each fiscal year beginning on October 1, 2000, a number of
shares shall be added to the number of shares available for issuance under the
Plan that is equal to 5% of the total number of shares of Common Stock issued by
the Company during the immediately preceding fiscal year. Notwithstanding the
foregoing, the maximum aggregate number of shares of Common Stock issued and
sold under the Plan shall not exceed 5,000,000 shares. Shares of Common Stock
issued and sold under the Plan may be either authorized but unissued shares or
shares held in the Company's treasury. The number of shares of Common Stock
reserved for issuance under the Plan shall at no time be less than the maximum
number of shares which may be purchased at any time pursuant to outstanding
options. Shares of Common Stock covered by an Option that shall have been
exercised shall not again be available for an Option grant. If an Option shall
terminate or expire for any reason (including, without limitation, the
cancellation of an Option pursuant to Section 6.7 hereof) without being wholly
exercised, the number of shares to which such Option termination relates shall
again be available for grant hereunder.

            5.2 Adjustments. In the event of a reorganization, recapitalization,
stock split, stock dividend, combination of shares, merger or consolidation, or
the sale, conveyance, or other transfer by the Company of all or substantially
all of its property, or any other change in the corporate structure or shares of
the Company, pursuant to any of which events the then outstanding shares of
Common Stock are split up or combined, or are changed into, become exchangeable
at the holder's election for, or entitle the holder thereof to, other shares of
stock or any other consideration, or in the case of any other transaction
described in Section 424(a) of the Code, the Committee may change the number and
kind of shares (including by substitution of shares of another corporation)
subject to the Options and/or the Option Price of such shares in the manner that
it shall deem to be equitable and appropriate. In no event may any such change
be made to an Incentive Stock Option which would constitute a "modification"
within the meaning of Section 424(h)(3) of the Code without the consent of any
affected Optionee. In the event of any merger, consolidation, reorganization, or
similar corporate event in which shares of the Common Stock are to be exchanged
for payment of cash (the "Cash Consideration") the Committee may, in its
discretion, (i) make equitable adjustments as provided above, or (ii) cancel any
outstanding Option in exchange for payment in cash, if any, equal to the excess
of the Cash Consideration for the shares underlying such Option over the Option
Price for such shares.

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                                   ARTICLE VI

                                     OPTIONS

            6.1 Grant of Option. An Option may be granted to any Eligible Person
selected by the Committee. The grant of an Option shall first be effective upon
the date it is approved by the Committee, except to the extent the Committee
shall specify a later date upon which the grant of an Option shall first be
effective. Each Option shall be designated, at the discretion of the Committee,
as an Incentive Stock Option or a Nonqualified Stock Option, provided that
Incentive Stock Options may only be granted to Eligible Persons who are
considered employees of the Company or any Subsidiary for purposes of Section
422 of the Code. The Company and the Optionee shall execute a Stock Option
Agreement which shall set forth such terms and conditions of the Option as may
be determined by the Committee to be consistent with the Plan, and which may
include additional provisions and restrictions that are not inconsistent with
the Plan.

            6.2 Maximum Limit. Notwithstanding anything elsewhere in the Plan to
the contrary, the maximum number of shares of Common Stock that may be subject
to Options granted to any Optionee during any one calendar year shall be 500,000
shares (subject to adjustment as provided in Section 5.2 hereof).

            6.3 Option Price. The Option Price shall be determined by the
Committee; provided, however, that the Option Price shall not be less than 100
percent of the Fair Market Value of a share of Common Stock on the trading date
immediately preceding the Date of Grant.

            6.4 Vesting; Term of Option. Unless otherwise specified by the
Committee in the Stock Option Agreement for an Optionee, an Option shall vest
and become exercisable in cumulative annual installments, each of which shall
relate to one-fifth of the number of shares of Common Stock originally covered
thereby (as may be adjusted in accordance with Section 5.2 hereof), on the
first, second, third, fourth and fifth anniversaries of the Date of Grant,
respectively, provided that the Optionee remains an Eligible Person on each such
anniversary. Notwithstanding the foregoing, the Committee, in its sole
discretion, may accelerate the exercisability of any Option at any time, and an
Option may become vested and exercisable in accordance with the provisions of
Articles VII and IX hereof. The period during which a vested Option may be
exercised shall be ten years from the Date of Grant, unless a shorter exercise
period is specified by the Committee in the Stock Option Agreement for an
Optionee.

            6.5 Option Exercise; Withholding. Subject to such terms and
conditions as shall be specified in a Stock Option Agreement, an Option may be
exercised in whole or in part at any time, with respect to whole shares only,
within the period permitted for the exercise thereof, and shall be exercised by
written notice of intent to exercise the Option with respect to a specified
number of shares delivered to the Company at its principal office, and payment
in full to the Company at said office of the amount of the Option Price for the
number of shares of the Common Stock with respect to which the Option is then

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being exercised. Payment of the Option Price shall be made (i) in cash or by
cash equivalent, (ii) at the discretion of the Committee, in Common Stock that
has been held by the Optionee for at least six months (or such other period as
the Committee may deem appropriate for purposes of applicable accounting rules),
valued at the Fair Market Value of such shares determined on the date of
exercise, (iii) at the discretion of the Committee, by a delivery of a notice
that the Optionee has placed a market sell order (or similar instruction) with a
broker with respect to shares of Common Stock then issuable upon exercise of the
Option, and that the broker has been directed to pay a sufficient portion of the
net proceeds of the sale to the Company in satisfaction of the Option Price
(conditioned upon the payment of such net proceeds), (iv) at the discretion of
the Committee, by a combination of the methods described above, or (v) by such
other method as may be approved by the Committee and set forth in the Stock
Option Agreement. In addition to and at the time of payment of the Option Price,
the Optionee shall pay to the Company the full amount of all federal and state
withholding and other employment taxes required to be withheld in connection
with such exercise, in any manner consistent with the foregoing that is approved
by the Committee and set forth in the Stock Option Agreement.

            6.6 Limited Transferability of Option. All Options shall be
nontransferable except (i) upon the Optionee's death, by the Optionee's will or
the laws of descent and distribution or (ii) in the case only of Nonqualified
Stock Options on a case-by-case basis as may be approved by the Committee in its
discretion, in accordance with the terms provided below. Each Option Agreement
for a Nonqualified Stock Option shall provide that the Optionee may, during his
or her lifetime and subject to the prior approval of the Committee at the time
of proposed transfer, transfer all or part of the Option to a family member (as
defined below), provided that any such transfer is made by the Optionee for
estate and tax planning, donative purposes, or pursuant to a domestic relations
order, and no consideration (other than nominal consideration or interests in a
family partnership, family corporation or other family-related entity) is
received by the Optionee therefor. The transfer of a Nonqualified Stock Option
shall be subject to such other terms and conditions as the Committee may in its
discretion impose from time to time, including a condition that the portion of
the Option to be transferred be vested and exercisable by the Optionee at the
time of the transfer. Subsequent transfers of an Option transferred under this
Section 6.6 shall be prohibited other than by will or the laws of descent and
distribution upon the death of the transferee.

            For purposes hereof, a "family member" shall mean any child,
stepchild, grandchild, parent, stepparent, grandparent, spouse, former spouse,
sibling, niece, nephew, mother-in-law, father-in-law, son-in-law,
daughter-in-law, brother-in-law, or sister-in-law, including adoptive
relationships, any person sharing the participant's household (other than a
tenant or employee), a trust in which these persons have more than fifty percent
of the beneficial interest, a foundation in which these persons (or the
participant) control the management of assets, and any other entity in which
these persons (or the participant) own more than fifty percent of the voting
interests.

            No transfer of an Option by the Optionee by will or by laws of
descent and distribution shall be effective to bind the Company unless the
Company shall have been

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furnished with written notice thereof and an authenticated copy of the will
and/or such other evidence as the Committee may deem necessary to establish the
validity of the transfer. During the lifetime of an Optionee, the Option shall
be exercisable only by him, except that, in the case of an Optionee who is
legally incapacitated, the Option shall be exercisable by his guardian or legal
representative.

            6.7 Cancellation, Substitution and Amendment of Options. The
Committee shall have the authority to effect, at any time and from time to time,
with the consent of the affected Optionees, (i) the cancellation of any or all
outstanding Options and the grant in substitution therefor of new Options
covering the same or different numbers of shares of Common Stock and having an
Option Price which may be the same as or different than the Option Price of the
cancelled Options or (ii) the amendment of the terms of any and all outstanding
Options.

                                   ARTICLE VII

                            ADDITIONAL RULES FOR ISOs

            7.1 Ten Percent Owners. Notwithstanding any other provisions of this
Plan to the contrary, in the case of an Incentive Stock Option granted to a Ten
Percent Owner, (i) the period during which any such Incentive Stock Option may
be exercised shall not be greater than five years from the Date of Grant and
(ii) the Option Price of such Incentive Stock Option shall not be less than 110
percent of the Fair Market Value of a share of Common Stock on the Date of
Grant.

            7.2 Annual Limits. No Incentive Stock Option shall be granted to an
Optionee as a result of which the aggregate fair market value (determined as of
the date of grant) of the stock with respect to which incentive stock options
are exercisable for the first time in any calendar year under the Plan, and any
other stock option plans of the Company, any Subsidiary or any parent
corporation, would exceed $100,000, determined in accordance with Section 422(d)
of the Code. This limitation shall be applied by taking options into account in
the order in which granted.

            7.3 Termination of Employment. An Incentive Stock Option may provide
that such Option may be exercised not later than three months following
termination of employment of the Optionee with the Company and all Subsidiaries,
subject to special rules relating to death and disability, as and to the extent
determined by the Committee to be consistent with the requirements of Section
422 of the Code and Treasury Regulations thereunder.

            7.4 Disqualifying Dispositions. If shares of Common Stock acquired
by exercise of an Incentive Stock Option are disposed of within two years
following the Date of Grant or one year following the transfer of such shares to
the Optionee upon exercise, the Optionee shall, within 10 days after such
disposition, notify the Company in writing of the date and terms of such
disposition and provide such other information regarding the disposition as the
Committee may reasonably require.

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            7.5 Other Terms and Conditions. Any Incentive Stock Option granted
hereunder shall contain such additional terms and conditions, not inconsistent
with the terms of this Plan, as are deemed necessary or desirable by the
Committee, which terms, together with the terms of this Plan, shall be intended
and interpreted to cause such Incentive Stock Option to qualify as an "incentive
stock option" under Section 422 of the Code. A Stock Option Agreement for an
Incentive Stock Option may provide that such Option shall be treated as a
Nonqualified Stock Option to the extent that certain requirements applicable to
"incentive stock options" under the Code shall not be satisfied. An Incentive
Stock Option shall by its terms be nontransferable otherwise than by will or by
the laws of descent and distribution, and shall be exercisable during the
lifetime of an Optionee only by such Optionee.

                                  ARTICLE VIII

                             TERMINATION OF SERVICE

            8.1 Death. Unless otherwise provided and set forth in the Stock
Option Agreement, if an Optionee shall die at any time after the Date of Grant
and while he is an Eligible Person, the executor or administrator of the estate
of the decedent, or the person or persons to whom an Option shall have been
validly transferred in accordance with Section 6.6 hereof pursuant to will or
the laws of descent and distribution, shall have the right, during the period
ending one year after the date of the Optionee's death (subject to Sections 6.4
and 7.1 hereof concerning the maximum term of an Option), to exercise the
Optionee's Option to the extent that it was exercisable at the date of the
Optionee's death and shall not have been previously exercised. The Committee may
determine at or after grant to make any portion of his Option that is not
exercisable at the date of death immediately vested and exercisable.

            8.2 Disability. Unless otherwise provided by the Committee and set
forth in the Stock Option Agreement, if an Optionee's employment or other
service with the Company or any Subsidiary shall be terminated as a result of
his permanent and total disability (within the meaning of Section 22(e)(3) of
the Code) at any time after the Date of Grant and while he is an Eligible
Person, the Optionee (or in the case of an Optionee who is legally
incapacitated, his guardian or legal representative) shall have the right,
during a period ending one year after the date of his disability (subject to
Sections 6.4 and 7.1 hereof concerning the maximum term of an Option), to
exercise an Option to the extent that it was exercisable at the date of such
termination of employment or other service and shall not have been exercised.
The Committee may determine at or after grant to make any portion of his Option
that is not exercisable at the date of termination of employment or other
service due to disability immediately vested and exercisable.

            8.3 Termination for Cause. Unless otherwise provided by the
Committee and set forth in the Stock Option Agreement, if an Optionee's
employment or other service

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with the Company or any Subsidiary shall be terminated for cause, the Optionee's
right to exercise any unexercised portion of an Option shall immediately
terminate and all rights thereunder shall cease. For purposes of this Section
8.3, termination for "cause" shall include, but not be limited to, embezzlement
or misappropriation of corporate funds, any acts of dishonesty resulting in
conviction for a felony, misconduct resulting in material injury to the Company
or any Subsidiary, significant activities harmful to the reputation of the
Company or any Subsidiary, a significant violation of Company or Subsidiary
policy, willful refusal to perform, or substantial disregard of, the duties
properly assigned to the Optionee, or a significant violation of any
contractual, statutory or common law duty of loyalty to the Company or any
Subsidiary. Notwithstanding the foregoing, in the event an Optionee is party to
an employment (or similar) agreement with the Company or any Subsidiary that
defines the term "cause," such definition shall apply for purpose of the Plan.
The Committee shall have the power to determine whether the Optionee has been
terminated for cause and the date upon which such termination for cause occurs.
Any such determination shall be final, conclusive and binding upon the Optionee.

            8.4 Other Termination of Service. Unless otherwise provided by the
Committee and set forth in the Stock Option Agreement, if an Optionee's
employment or other service with the Company or any Subsidiary shall be
terminated for any reason other than death, permanent and total disability or
termination for cause, the Optionee shall have the right, during the period
ending 90 days after such termination (subject to Sections 6.4 and 7.1 hereof
concerning the maximum term of an Option and subject to the terms of any
employment agreement between the Company or a Subsidiary and the Optionee), to
exercise an Option to the extent that it was exercisable at the date of such
termination and shall not have been exercised. For purposes of this Section 8.4,
an Optionee shall not be considered to have terminated employment or other
service with the Company or any Subsidiary until the expiration of the period of
any military, sick leave or other bona fide leave of absence, up to a maximum
period of 90 days (or such greater period during which the Optionee is
guaranteed reemployment either by statute or contract).

                                   ARTICLE IX

                                CHANGE IN CONTROL

            9.1 Change in Control. Unless otherwise provided by the Committee
and set forth in the Stock Option Agreement, upon a "change in control" of the
Company (as defined below), each outstanding Option, to the extent that it shall
not otherwise have become vested and exercisable, shall automatically become
fully and immediately vested and exercisable, without regard to any otherwise
applicable vesting requirement under Section 6.4 hereof; provided, however, that
no such vesting shall occur if provision has been made in writing in connection
with such transaction for (a) the continuation of the Plan and/or the assumption
of such Options by a successor corporation (or a parent or subsidiary thereof)
or (b) the substitution for such Options of new options covering the stock of a
successor corporation (or a parent or subsidiary thereof), with appropriate
adjustments as to the number and kinds of shares and exercise prices. In the
event of any

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such continuation, assumption or substitution, the Plan and/or such Options
shall continue in the manner and under the terms so provided.

            9.2 Definition. For purposes of Section 9.1 hereof, a "change in
control" of the Company shall mean:

            (i) an acquisition subsequent to the date hereof by any person,
      entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the
      Securities Exchange Act of 1934, as amended (the "Exchange Act")) (a
      "Person"), of beneficial ownership (within the meaning of Rule 13d-3
      promulgated under the Exchange Act) of 30% or more of either (A) the then
      outstanding shares of Common Stock or (B) the combined voting power of the
      then outstanding voting securities of the Company entitled to vote
      generally in the election of directors (the "Outstanding Company Voting
      Securities"); excluding, however, the following: (1) any acquisition
      directly from the Company, other than an acquisition by virtue of the
      exercise of a conversion privilege unless the security being so converted
      was itself acquired directly from the Company, (2) any acquisition by the
      Company and (3) any acquisition by an employee benefit plan (or related
      trust) sponsored or maintained by the Company;

            (ii) a change in the composition of the Board such that during any
      period of two consecutive years, individuals who at the beginning of such
      period constitute the Board, and any new director (other than a director
      designated by a person who has entered into an agreement with the Company
      to effect a transaction described in paragraphs (i), (iii) or (iv) of this
      section) whose election by the Board or nomination for election by the
      Company's stockholders was approved by a vote of at least two-thirds of
      the directors then still in office who either were directors at the
      beginning of the period or whose election or nomination for election was
      previously so approved, cease for any reason to constitute at least a
      majority of the members thereof;

            (iii) the consummation of a merger, consolidation, reorganization or
      similar corporate transaction which has been approved by the stockholders
      of the Company, whether or not the Company is the surviving company in
      such transaction, in which outstanding shares of Common Stock are
      converted into (A) shares of stock of another company, other than a
      conversion into shares of voting common stock of the successor corporation
      (or a holding company thereof) representing 80% of the voting power of all
      capital stock thereof outstanding immediately after the merger or
      consolidation or (B) other securities (of either the Company or another
      company) or cash or other property;

            (iv) the approval by the stockholders of the Company of (A) the sale
      or other disposition of all or substantially all of the assets of the
      Company or (B) a complete liquidation or dissolution of the Company; or

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            (v) the adoption by the Board of a resolution to the effect that any
      person has acquired effective control of the business and affairs of the
      Company.

                                    ARTICLE X

                               STOCK CERTIFICATES

            10.1 Issuance of Certificates. Subject to Section 10.2 hereof, the
Company shall issue a stock certificate in the name of the Optionee (or other
person exercising the Option in accordance with the provisions of the Plan) for
the shares of Common Stock purchased by exercise of an Option as soon as
practicable after due exercise and payment of the aggregate Option Price for
such shares. A separate stock certificate or separate stock certificates shall
be issued for any shares of Common Stock purchased pursuant to the exercise of
an Option that is an Incentive Stock Option, which certificate or certificates
shall not include any shares of Common Stock that were purchased pursuant to the
exercise of an Option that is a Nonqualified Stock Option.

            10.2 Conditions. The Company shall not be required to issue or
deliver any certificate for shares of Common Stock purchased upon the exercise
of any Option granted hereunder or any portion thereof prior to fulfillment of
all of the following conditions:

            (i) the completion of any registration or other qualification of
      such shares, under any federal or state law or under the rulings or
      regulations of the Securities and Exchange Commission or any other
      governmental regulatory body, that the Committee shall in its sole
      discretion deem necessary or advisable;

            (ii) the obtaining of any approval or other clearance from any
      federal or state governmental agency which the Committee shall in its sole
      discretion determine to be necessary or advisable;

            (iii) the lapse of such reasonable period of time following the
      exercise of the Option as the Committee from time to time may establish
      for reasons of administrative convenience;

            (iv) satisfaction by the Optionee of all applicable withholding
      taxes or other withholding liabilities; and

            (v) if required by the Committee, in its sole discretion, the
      receipt by the Company from an Optionee of (i) a representation in writing
      that the shares of Common Stock received upon exercise of an Option are
      being acquired for investment and not with a view to distribution and (ii)
      such other representations and warranties as are deemed necessary by
      counsel to the Company.

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            10.3 Legends. The Company reserves the right to legend any
certificate for shares of Common Stock, conditioning sales of such shares upon
compliance with applicable federal and state securities laws and regulations.

                                   ARTICLE XI

                    EFFECTIVE DATE, TERMINATION AND AMENDMENT

            11.1 Effective Date. The Plan shall become effective upon its
adoption by the Board and its approval by the stockholders of the Company.

            11.2 Termination. The Plan shall terminate on the date immediately
preceding the tenth anniversary of the date the Plan is adopted by the Board.
The Board may, in its sole discretion and at any earlier date, terminate the
Plan. Notwithstanding the foregoing, no termination of the Plan shall in any
manner affect any Option theretofore granted without the consent of the Optionee
or the permitted transferee of the Option.

            11.3 Amendment. The Board may at any time and from time to time and
in any respect, amend or modify the Plan. Solely to the extent deemed necessary
or advisable by the Board, for purposes of complying with Sections 422 or 162(m)
of the Code or rules of any securities exchange or for any other reason, the
Board may seek the approval of any such amendment by the Company's stockholders.
Any such approval shall be by the affirmative votes of the stockholders of the
Company present, or represented, and entitled to vote at a meeting duly held in
accordance with applicable state law and the Certificate of Incorporation and
By-Laws of the Company. Notwithstanding the foregoing, no amendment or
modification of the Plan shall in any manner affect any Option theretofore
granted without the consent of the Optionee or the permitted transferee of the
Option.

                                   ARTICLE XII

                                  MISCELLANEOUS

            12.1 Employment or other Service. Nothing in the Plan, in the grant
of any Option or in any Stock Option Agreement shall confer upon any Eligible
Person the right to continue in the capacity in which he is employed by or
otherwise provides services to the Company or any Subsidiary. Notwithstanding
anything contained in the Plan to the contrary, unless otherwise provided in a
Stock Option Agreement, no Option shall be affected by any change of duties or
position of the Optionee (including a transfer to or from the Company or any
Subsidiary), so long as such Optionee continues to be an Eligible Person.

            12.2 Rights as Shareholder. An Optionee or the permitted transferee
of an Option shall have no rights as a shareholder with respect to any shares
subject to such Option prior to the purchase of such shares by exercise of such
Option as provided herein. Nothing contained herein or in the Stock Option
Agreement relating to any Option shall

                                       12

<PAGE>

create an obligation on the part of the Company to repurchase any shares of
Common Stock purchased hereunder.

            12.3 Other Compensation and Benefit Plans. The adoption of the Plan
shall not affect any other stock option or incentive or other compensation plans
in effect for the Company or any Subsidiary, nor shall the Plan preclude the
Company from establishing any other forms of incentive or other compensation for
employees of the Company or any Subsidiary. The amount of any compensation
deemed to be received by an Optionee as a result of the exercise of an Option or
the sale of shares received upon such exercise shall not constitute compensation
with respect to which any other employee benefits of such Optionee are
determined, including, without limitation, benefits under any bonus, pension,
profit sharing, life insurance or salary continuation plan, except as otherwise
specifically determined by the Board or the Committee or provided by the terms
of such plan.

            12.4 Plan Binding on Successors. The Plan shall be binding upon the
Company, its successors and assigns, and the Optionee, his executor,
administrator and permitted transferees.

            12.5 Construction and Interpretation. Whenever used herein, nouns in
the singular shall include the plural, and the masculine pronoun shall include
the feminine gender. Headings of Articles and Sections hereof are inserted for
convenience and reference and constitute no part of the Plan.

            12.6 Severability. If any provision of the Plan or any Stock Option
Agreement shall be determined to be illegal or unenforceable by any court of law
in any jurisdiction, the remaining provisions hereof and thereof shall be
severable and enforceable in accordance with their terms, and all provisions
shall remain enforceable in any other jurisdiction.

            12.7 Governing Law. The validity and construction of this Plan and
of the Stock Option Agreements shall be governed by the laws of the State of
Delaware.

                                       13<PAGE>

                                                                     Exhibit 4.3

                               CVC HOLDINGS, INC.
                                STOCK OPTION PLAN

                                    ARTICLE I

                                 PURPOSE OF PLAN

            The Amended and Restated Stock Option Plan (the "Plan") of CVC
Holdings, Inc. (the "Company"), adopted by the Board of Directors of the Company
effective as of June 30, 1996, is intended to advance the best interests of the
Company by providing directors or executive and other key employees (as defined
below) of, or consultants to, the Company or any Subsidiary who have management
responsibility for the Company or any Subsidiary with additional incentives by
allowing such employees to acquire an ownership interest in the Company. The
Plan is a compensatory benefit plan within the meaning of Rule 701 under the
Securities Act of 1933, as amended (the "Securities Act"). The issuance of
Common Stock pursuant to the Plan is intended to qualify for the exemption from
registration under the Securities Act provided by Rule 701.

            Stockholder approval of the Plan shall be obtained within twelve
(12) months after the Plan is adopted. Any option exercised under the Plan
before stockholder approval is obtained must be rescinded if stockholder
approval is not obtained within twelve (12) months after the Plan is adopted.
Shares of Common Stock issued upon any such exercise shall not be counted in
determining whether stockholder approval of the Plan has been obtained.

                                  ARTICLE II

                                  DEFINITIONS

            For purposes of the Plan the following terms have the indicated
meanings:

            "Board" means the Board of Directors of the Company.

            "Code" means the Internal Revenue Code of 1986, as amended, and any
successor statute.

            "Committee" means the Compensation Committee of the Board.

            "Common Stock" means the Common Stock, par value $.01 per share, of
CVC Holdings, Inc.

            "Fair Market Value" of the Common Stock as of any date means the
average of the closing prices of the sales of Common Stock on all securities
exchanges on which the Common Stock is listed or, if on any day the Common Stock
is not so listed, the sales price of the Common Stock as reported on the NASDAQ
National Market System as of 4:00 P.M., New York time, on
<PAGE>

such day or, if the Common Stock is not reported on the NASDAQ National Market
System, the average of the representative bid and asked prices quoted in the
NASDAQ System as of 4:00 P.M., New York time, on such day, in each such case
averaged over a period of 21 trading days consisting of the day as of which Fair
Market Value is being determined and the 20 consecutive trading days prior to
such day. If at any time the Common Stock is not listed on any securities
exchange or quoted in the NASDAQ System, Fair Market Value will be determined in
good faith by the Committee. Fair Market Value will be determined without regard
to any restriction on transferability of the Common Stock other than any such
restriction which by its terms will never lapse.

            "Participant" means any director or executive or other key employee
of, or consultant to, the Company or any Subsidiary who has been selected to
participate in the Plan by the Committee. "Key employee" means an employee who
has management responsibility for the Company or any Subsidiary.

            "Stockholders Agreement" means the Amended and Restated
Stockholders' Agreement dated as of May 22, 1995 among the Company and the
stockholders signatory thereto.

            "Sale of the Company" means a merger or consolidation effecting a
change in control of the Company (defined as the acquisition of securities of
the Company possessing a majority or more of the total combined ordinary voting
power of the Company's securities by persons who were not stockholders of the
Company immediately prior to such transaction or affiliates of such
stockholders), or a sale of a majority of the outstanding voting securities of
the Company effecting a change in control of the Company.

            "Subsidiary" means any subsidiary corporation (as such term is
defined in Section 424(f) of the Code) of the Company.

                                   ARTICLE III

                                 ADMINISTRATION

            The Plan shall be administered by the Committee. Subject to the
limitations of the Plan, the Committee shall have the sole and complete
authority to: (i) select Participants, (ii) grant Options (as defined in Article
IV) to Participants in such forms and amounts as it shall determine, (iii)
impose such limitations, restrictions and conditions upon such Options as it
shall deem appropriate, (iv) interpret the Plan and adopt, amend and rescind
administrative guidelines and other rules and regulations relating to the Plan,
(v) correct any defect or omission or reconcile any inconsistency in the Plan or
in any Options granted under the Plan, and (vi) make all other determinations
and take all other actions necessary or advisable for the implementation and
administration of the Plan. The Committee's determinations on matters within its
authority shall be conclusive and binding upon the Participants, the Company and
all other persons. All expenses associated with the administration of the Plan
shall be borne by the Company. The Committee may,

                                        2
<PAGE>

as approved by the Board and to the extent permissible by law, delegate any of
its authority hereunder to such persons or entities as it deems appropriate.

                                  ARTICLE IV

                        LIMITATION ON AGGREGATE SHARES

            The number of shares of Common Stock with respect to which stock
purchase options ("Options") may be granted under the Plan shall not exceed, in
the aggregate, 200,000 shares of Common Stock, subject to adjustment in
accordance with paragraph 6.5. To the extent any Options expire unexercised or
are cancelled, terminated or forfeited in any manner without the issuance of
Common Stock thereunder, the shares of Common Stock underlying such Options
shall again be available under the Plan. The shares of Common Stock available
under the Plan may consist of authorized and unissued shares, treasury shares or
a combination thereof, as the Committee shall determine.

                                   ARTICLE V

                                    AWARDS

            5.1 Grant of Options. The Committee may grant Options to
Participants from time to time in accordance with this Article V. Options
granted under the Plan may be nonqualified stock options or "incentive stock
options" within the meaning of Section 422 of the Code or any successor
provision, as specified by the Committee. The exercise price per share of Common
Stock under each Option shall be fixed by the Committee in its sole discretion
at the time of grant of the Option; provided, however, that the exercise price
of an incentive stock option shall equal at least 100% of the Fair Market Value
of a share of Common Stock on the date of grant, and the exercise price of a
non-incentive stock option shall equal at least 85% of the Fair Market Value of
a share of Common Stock on the date of grant; provided, however, that the
exercise price of a stock option granted to any Participant who, at the time of
grant, owns stock of the Company (or any Subsidiary) representing more than 10%
of the total combined voting power of all classes of stock of the Company (or
each Subsidiary), shall equal at least 110% of the Fair Market Value of a share
of Common Stock on the date of grant. Options shall be exercisable at such time
or times as the Committee shall determine; provided, however, that to the extent
that the aggregate Fair Market Value of the shares with respect to which
incentive stock options are exercisable for the first time by the Participant
during any calendar year (under all plans of the Company and any parent or
Subsidiary) exceeds $100,000, such Options shall be treated as nonqualified
stock options. For purposes of the preceding sentence, incentive stock options
shall be taken into account in the order in which they were granted. The Fair
Market Value of the shares shall be determined as of the time the Option with
respect to such shares is granted.

            5.2 Vesting and Earning of Options. Options shall be exercisable
only to the extent vested and earned, provided, that vesting shall occur at a
minimum rate of at least 20% per year over five (5) years from the date of
grant. Subject to the Participant's continued employment

                                      3
<PAGE>

with the Company, a Participant's Options shall vest and become exercisable as
determined by the Committee at the time of grant only if earned based on the
targets set by the Committee at the time of grant.

            5.3 Exercise Procedure. Options shall be exercisable by written
notice to the Company (to the attention of the Company's Secretary) accompanied
by payment in full of the applicable exercise price. Payment of such exercise
price may be (i) in cash (including check, bank draft or money order), (ii)
other shares of Common Stock which (x) in the case of shares acquired upon
exercise of an Option have been owned by the Participant for more than six
months on the date of surrender, and (y) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the shares as to which said
Option shall be exercised, (iii) delivery of a properly executed exercise notice
together with such other documentation as the Committee and the broker, if
applicable, shall require to effect an exercise of the Option and delivery to
the Company of the sale or loan proceeds required to pay the exercise price, or
(iv) a combination of the foregoing.

            5.4 Conditions and Limitations on Exercise. At the discretion of the
Committee, as a condition to the receipt of Options hereunder, each Participant
may be required to execute and deliver to the Company a counterpart of, or
otherwise agree to be bound by the terms of, the Stockholders Agreement. In the
event of a Sale of the Company, the Committee may provide, in its discretion,
that the vested portion of outstanding Options shall become immediately
exercisable and that such Options shall terminate if not exercised as of the
date of the Sale of the Company or any other designated date or that such
Options shall thereafter represent only the right to receive the excess of the
consideration per share of Common Stock offered in such Sale of the Company over
the exercise price of such Options. The Committee may provide in connection with
the issuance of an Option for the Company's ability to repurchase, in connection
with termination of a Participant's employment with the Company, any or all (but
not less than all, unless the Participant consents) shares of Common Stock
acquired upon exercise of such Options, and/or for the Company's right of first
refusal with respect to such shares.

            5.5   Expiration of Options.

                  (a) Normal Expiration. In no event shall any part of any
Option be exercisable after the stated date of expiration thereof.

                  (b) Early Expiration Upon Termination of Employment or
Consulting Relationship. Except as otherwise provided by the Committee at the
time of grant of such Options, upon termination for any reason (subject to the
proviso of this sentence) of a Participant's employment or consulting
relationship by the Company and its Subsidiaries, all unvested Options or
portions thereof held by such Participant shall expire and be forfeited as of
such date and all vested Options held by such Participant shall expire to the
extent not theretofore exercised for a period of thirty (30) days (or such
longer period not to exceed a period of three (3) months as shall be determined
appropriate by the Committee at the time of grant) after the date of such
termination; provided, if such termination was caused by the death or disability
of the Participant (in the case of a disability, whether or not such disability
is a "disability" as such term is defined in Section 22(e)(3)

                                      4
<PAGE>

of the Code), all vested Options held by such Participant shall expire to the
extent not theretofore exercised one year after the date of such termination. In
the event that an incentive stock option is exercised more than three months
following termination of a Participant's employment, it shall be treated as a
nonqualified stock option, unless such termination of employment was due to the
Participant's death or "disability" (as defined in Section 22(e)(3) of the
Code).

                                  ARTICLE VI

                              GENERAL PROVISIONS

            6.1 Written Agreement. The grant of each Option hereunder shall be
embodied in a written option agreement which shall be signed by the Participant
to whom the Option is granted and shall be subject to the terms and conditions
set forth herein and therein.

            6.2 Listing, Registration and Legal Compliance. If at any time the
Committee determines, in its discretion, that the listing, registration or
qualification of the shares subject to Options upon any securities exchange or
under any state or federal securities or other law or regulation, or the consent
or approval of any governmental regulatory body, is necessary as a condition to
or in connection with the granting of Options or the purchase or issuance of
shares thereunder, no Options may be granted or exercised, in whole or in part,
unless such listing, registration, qualification, consent or approval shall have
been effected or obtained free of any conditions not acceptable to the
Committee. The holders of such Options will supply the Company with such
certificates, representations and information as the Company shall request and
shall otherwise cooperate with the Company in obtaining such listing,
registration, qualification, consent or approval. In the case of officers and
other persons subject to Section 16(b) of the Securities Exchange Act of 1934,
as amended, the Committee may at any time impose any limitations upon the
exercise of Options that, in the Committee's discretion, are necessary in order
to comply with such Section 16(b) and the rules and regulations thereunder. If
the Company, as part of an offering of securities or otherwise, finds it
necessary because of federal or state regulatory requirements to reduce the
period during which any Options may be exercised, the Committee may, in its
discretion and without the Participant's consent, so reduce such period on not
less than 15 days' written notice to the holders thereof.

            6.3 Options Not Transferable. Options may not be transferred other
than by will or the laws of descent and distribution and, during the lifetime of
the Participant to whom they were granted, may be exercised only by such
Participant (or his or her legal guardian or legal representative). In the event
of the death of a Participant, exercise of Options granted hereunder to such
Participant may be made only by the executor or administrator of such
Participant's estate or the person or persons to whom such Participant's rights
under the Options will pass by will or the laws of descent and distribution.

            6.4 Withholding of Taxes. The Company may, if necessary or
desirable, withhold from any amounts due and payable by the Company to any
Participant (or secure payment from such Participant in lieu of withholding) the
amount of any withholding or other tax due from the

                                      5
<PAGE>

Company with respect to any issuance or exercise of Options granted under the
Plan to such Participant, and the Company may defer such issuance or exercise
unless indemnified to its satisfaction against the payment of any such amount.

            6.5 Adjustments. In the event of a reorganization, recapitalization,
stock dividend or stock split, or combination or other change in the shares of
Common Stock, the Board or the Committee shall, in order to prevent the dilution
or enlargement of rights under outstanding Options, make such adjustments in the
number and type of shares authorized by the Plan, the number and type of shares
covered by outstanding Options and the exercise prices specified therein as may
be determined to be appropriate and equitable.

            6.6 Rights of Participation. Nothing in the Plan shall interfere
with or limit in any way the right of the Company or any Subsidiary to terminate
any Participant's employment or affiliation at any time (with or without cause),
or confer upon any Participant any right to continue in the employ of or to be
affiliated with the Company or any Subsidiary for any period of time or to
continue to receive such Participant's current (or other) rate of compensation.
No employee shall have a right to be selected as a Participant or, having been
so selected, to be selected again as a Participant. A Participant shall have no
rights as a stockholder with respect to any shares covered by Options until such
Participant becomes the record holder thereof.

            6.7 Amendment, Suspension and Termination of Plan. The Committee may
suspend or terminate the Plan or any portion thereof at any time and may amend
it from time to time in such respects as the Committee may deem advisable;
provided, however, that no such amendment shall be made without stockholder
approval to the extent such approval is required by law, agreement or the rules
of any exchange upon which the Common Stock is listed, and no such amendment,
suspension or termination shall impair the rights of Participants under
outstanding Options without the consent of the Participants affected thereby,
except as provided below. No Options shall be granted hereunder after the tenth
anniversary of the effective date of this Amendment and Restatement.

            6.8 Amendment of Outstanding Options. The Committee may amend or
modify any Option in any manner to the extent that the Committee would have had
the authority under the Plan initially to grant such Option; provided that,
except as expressly contemplated herein or in any agreement evidencing such
Option, no such amendment or modification shall impair the rights of any
Participant under any outstanding Option without the consent of such
Participant.

            6.9 Indemnification. In addition to such other rights of
indemnification as they may have as members of the Board or the Committee, the
members of the Committee shall be indemnified by the Company against all costs
and expenses reasonably incurred by them in connection with any action, suit or
proceeding to which they or any of them may be party by reason of any action
taken or failure to act under or in connection with the Plan or any Option
granted under the Plan, and against all amounts paid by them in settlement
thereof (provided such settlement is approved by independent legal counsel
selected by the Company) or paid by them in satisfaction of a judgment in any
such action, suit or proceeding; provided, however, that any such Committee

                                      6
<PAGE>

member shall be entitled to the indemnification rights set forth in this
paragraph 6.9 only if such member has acted in good faith and in a manner that
such member reasonably believed to be in or not opposed to the best interests of
the Company and, with respect to any criminal action or proceeding, had no
reasonable cause to believe that such conduct was unlawful, and further provided
that upon the institution of any such action, suit or proceeding a Committee
member shall give the Company written notice thereof and an opportunity to
handle and defend the same before such Committee member undertakes to handle and
defend it on his or her own behalf.

            6.10 Annual Financial Statements. The Company shall provide any
Participant with a copy of the Company's annual financial statements for any
fiscal year of the Company (after such financial statements have been prepared)
if, as of the end of such fiscal year, any portion of the Participant's Options
or any shares issued upon exercise thereof, are outstanding.

                                      7

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