Document:

Execution Copy

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                                                                     EXHIBIT 4.1

                             STOCKHOLDERS AGREEMENT

                                  by and among

                             NBC ACQUISITION CORP.,

                           HWH CAPITAL PARTNERS, L.P.,

                         HWH CORNHUSKER PARTNERS, L.P.,

                       WESTON PRESIDIO CAPITAL III, L.P.,

                        WESTON PRESIDIO CAPITAL IV, L.P.,

                          WPC ENTREPRENEUR FUND, L.P.,

                         WPC ENTREPRENEUR FUND II, L.P.,

                                       and

                       THE OTHER STOCKHOLDERS PARTY HERETO

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

                                  July 11, 2002
                          -----------------------------

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                                TABLE OF CONTENTS
                                -----------------

                                                                            Page
                                                                            ----

ARTICLE I RESTRICTIONS ON TRANSFER.............................................1
        1.01   Restrictions on Transfer of Shares..............................1
        1.02   Transfers During Initial Three Years............................2
        1.03   Transfers After Initial Three Years.............................2
        1.04   Management Stockholders.........................................2
        1.05   Transfers in Compliance with Law; Substitution of Transferee....2

ARTICLE II TAG-ALONG RIGHT.....................................................3
        2.01   Offer...........................................................3
        2.02   Notice..........................................................3
        2.03   Rights of Other Stockholders....................................3
        2.04   Exercise of Rights by other Stockholders........................3
        2.05   Sale to Third Party Offeror.....................................3
        2.06   Non-Application.................................................4

ARTICLE III DRAG-ALONG RIGHTS..................................................4
        3.01   Drag-Along Right................................................4
        3.02   Drag-Along Procedure............................................6
        3.03   Drag-Along Notice...............................................6
        3.04   Mechanics of Sale...............................................6
        3.05   Waiver of Appraisal Rights......................................6
        3.06   Voting Agreement; Proxy.........................................7
        3.07   Non-Application.................................................7

ARTICLE IV PREEMPTIVE RIGHTS...................................................7
        4.01   General.........................................................7

ARTICLE V DIRECTORS; INFORMATION RIGHTS........................................8
        5.01   Size of the Board...............................................8
        5.02   Composition of the Board; Board Committees......................8
        5.03   Election and Removal of Directors...............................9
        5.04   Decisions of the Board of Directors.............................9
        5.05   Consent Rights..................................................9
        5.06   Information Rights.............................................11
        5.07   Notice of Offer................................................12

ARTICLE VI STOCK CERTIFICATE LEGEND...........................................12
        6.01   General........................................................12

ARTICLE VII DEFINITIONS.......................................................13
        7.01   Certain Definitions............................................13
        7.02   Other Defined Terms............................................15
        7.03   HWH/Buyers.....................................................16

                                       i
<PAGE>

ARTICLE VIII MISCELLANEOUS....................................................17
        8.01   Effective Date; Termination....................................17
        8.02   Confidentiality................................................17
        8.03   By-law Amendments..............................................18
        8.04   Notices........................................................18
        8.05   Assignment.....................................................20
        8.06   No Third Party Beneficiaries...................................20
        8.07   Severability...................................................20
        8.08   Amendment and Waiver...........................................20
        8.09   Usage..........................................................20
        8.10   Articles and Sections..........................................20
        8.11   No Strict Construction.........................................20
        8.12   Governing Law..................................................20
        8.13   Consent to Jurisdiction and Service of Process.................20
        8.14   Waiver of Jury.................................................21
        8.15   Specific Performance...........................................21
        8.16   Complete Agreement.............................................21
        8.17   Counterparts...................................................21

                                       ii
<PAGE>

                             STOCKHOLDERS AGREEMENT
                             ----------------------

               THIS STOCKHOLDERS AGREEMENT is made as of July 11, 2002 (this
"Agreement"), by and among HWH Capital Partners, L.P., a Delaware limited
partnership ("HWH Capital"), HWH Cornhusker Partners, L.P., a Delaware limited
partnership ("HWH Cornhusker" and, together with HWH Capital, "HWH"), each of
the persons listed on the signature pages hereto (collectively, the "Management
Stockholders," and each individually, a "Management Stockholder"), Weston
Presidio Capital III, L.P., a Delaware limited partnership ("Buyer 1"), Weston
Presidio Capital IV, L.P., a Delaware limited partnership ("Buyer 2"), WPC
Entrepreneur Fund, L.P., a Delaware limited partnership ("Buyer 3") and WPC
Entrepreneur Fund II, L.P., a Delaware limited partnership ("Buyer 4") and NBC
Acquisition Corp., a Delaware corporation (the "Company"). Buyer 1, Buyer 2,
Buyer 3 and Buyer 4 are collectively referred to herein as the "Buyers," and
each, a "Buyer". Unless otherwise provided herein, capitalized terms used herein
are defined in Article VII below.

                                R E C I T A L S:
                                - - - - - - - -

               A. The Company has authorized capital stock of 5,000,000 shares
of Class A Common Stock, par value $0.01 per share (the "Common Stock").

               B. Pursuant to a Stock Purchase Agreement, dated as of even date
herewith (the "Stock Purchase Agreement"), among HWH, certain of the Management
Stockholders and the Buyers, the Buyers have agreed to purchase shares of Common
Stock from HWH and such Management Stockholders.

               C. The parties have agreed INTER ALIA to make certain provisions
relating to the transfer of Shares and governance, upon the terms and conditions
set forth herein.

               NOW, THEREFORE, in consideration of the mutual covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

                                   ARTICLE I

                            RESTRICTIONS ON TRANSFER

               1.01 RESTRICTIONS ON TRANSFER OF SHARES. No Stockholder or
Management Stockholder shall sell, give, assign, hypothecate, pledge, encumber,
grant a security interest in or otherwise dispose of (whether by operation of
law or otherwise) (each a "Transfer") any of its Shares or any right, title or
interest therein or thereto, except in accordance with the provisions of this
Agreement. Any attempt to Transfer any Shares or any rights hereunder in
violation of the preceding sentence shall be null and void ab initio.

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                                                                              2

               1.02 TRANSFERS DURING INITIAL THREE YEARS. From the Closing Date
(as defined in the Stock Purchase Agreement) until the third anniversary
thereof, and subject to the last sentence of this Section 1.02, HWH (acting
jointly) and the Buyers (acting jointly), may each Transfer all, but not less
than all, of their respective Shares to a single third party (or a group of
related third parties) in a single transaction only with the prior written
consent of the non-transferring Stockholders, which consent shall not be
unreasonably withheld; except that any such consent may be withheld in the sole
discretion of the non-transferring Stockholders if such Transfer would result in
the triggering of any "change of control" provisions under any Indenture or any
other material debt instrument to which the Company or any Subsidiary is a party
or by which it is bound. If HWH is the transferring Stockholder, HWH shall also
have the rights set forth in Article III and any exercise of the Drag-Along
Right (as defined below) thereunder shall not require any consent of the other
Stockholders under this Section 1.02, and the Buyers shall have the rights set
forth in Article II.

               1.03 TRANSFERS AFTER INITIAL THREE YEARS. At any time after the
third anniversary of the Closing Date, any Stockholder may Transfer all or a
portion of its Shares to a third party or to any Affiliate of such Stockholder
(subject to the Tag-Along Right set forth in Article II), PROVIDED, that the
prior written consent of the Company to the sale of any Shares that constitute
less than 50% of all of the issued and outstanding shares of Common Stock (on a
fully diluted, as converted basis) shall be required if the proposed purchaser
is a Competitor.

               1.04 MANAGEMENT STOCKHOLDERS. A Management Stockholder may
Transfer all or any portion of his Shares upon his death, to his heirs or legal
representatives, provided, that any such permitted transferees agree in writing
to be bound hereby, as "Management Stockholders", as if they were an original
party hereto.

               1.05 TRANSFERS IN COMPLIANCE WITH LAW; SUBSTITUTION OF
TRANSFEREE.

                    (a) Notwithstanding any other provision of this Agreement,
no Transfer may be made pursuant to Section 1.02 or 1.03 unless the Transfer
complies in all respects with (i) the applicable provisions of this Agreement
and (ii) applicable federal and state securities laws, including the Securities
Act. If reasonably requested by the Company, an opinion of counsel to such
transferring Stockholder shall be supplied to the Company at such Stockholder's
expense, as the case may be, to the effect that such Transfer complies with the
applicable federal and state securities laws.

                    (b) Notwithstanding any other provision of this Agreement,
no Transfer may be made unless the transferee has agreed in writing with HWH and
the Buyers, in form and substance reasonably satisfactory to HWH and the Buyers,
to be bound by the terms and conditions of (i) this Agreement and (ii) if such
Transfer is effected pursuant to Section 1.02 or 1.04, the Buy/Sell Agreement.
Upon becoming a party to this Agreement, the transferee of a Stockholder or
Management Stockholder shall be substituted for, and shall enjoy the same rights
and be subject to the same obligations as, the transferring Stockholder or
Management Stockholder under this Agreement and, if such Transfer is effected

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                                                                              3

pursuant to Section 1.02 or 1.04, the Buy/Sell Agreement with respect to the
Shares transferred to such transferee.

                                   ARTICLE II

                                 TAG-ALONG RIGHT

               2.01 OFFER. If, at any time during the term hereof, any
Stockholder has received an offer from a third party (the "Third Party Offeror")
to buy for cash, securities or any combination thereof (for purposes of this
Article II, a "Third Party Offer") all or a portion of its Shares (such Shares
shall be referred to as the "Selling Stockholder's Offered Shares"), and such
Stockholder (for the purpose of this Article II, the "Selling Stockholder")
desires to accept the Third Party Offer, the non-Selling Stockholders and
Management Stockholders shall have the right to participate PRO RATA in any sale
of the Selling Stockholder's Offered Shares (the "Tag-Along Right") to the Third
Party Offeror, in accordance with the procedures set forth in this Article II.
Such Tag-Along Right shall be upon the same terms and conditions as the Third
Party Offer.

               2.02 NOTICE. The Selling Stockholder shall send written notice of
the Tag-Along Right (the "Tag-Along Notice") to each of the other Stockholders
and Management Stockholders, which notice shall state the number of Shares
included in the Selling Stockholder's Offered Shares, the proposed purchase
price per share and the nature of consideration (whether cash, securities or a
combination thereof). The Tag-Along Notice shall also state all of the material
terms and conditions of the Third Party Offer and the name of the Third Party
Offeror and shall include a copy of all writings between the Third Party Offeror
and the Selling Stockholder necessary to establish the terms of the Third Party
Offer.

               2.03 RIGHTS OF OTHER STOCKHOLDERS. Each Stockholder and
Management Stockholder (other than the Selling Stockholder) shall have the right
to (i) sell, upon the terms set forth in the Third Party Offer, that number of
Shares determined by multiplying the total number of Selling Stockholder's
Offered Shares by a fraction, the numerator of which shall be the total number
of Shares held by such Stockholder or Management Stockholder and the denominator
of which shall be the total number of issued and outstanding shares of Common
Stock, or (ii) reject the Tag-Along Right.

               2.04 EXERCISE OF RIGHTS BY OTHER STOCKHOLDERS. The rights of each
of the other Stockholders and Management Stockholders under Section 2.03 shall
be exercisable by written notice to the Selling Stockholder, with a copy to the
Company, given within 15 days after receipt of the Tag-Along Notice (the "Notice
Period"). If any other Stockholder or Management Stockholder fails to respond to
the Selling Stockholder within the Notice Period, such failure shall be regarded
as a rejection of the Tag-Along Right.

               2.05 SALE TO THIRD PARTY OFFEROR. Each Stockholder and Management
Stockholder who accepts the Tag-Along Right may sell its PRO RATA number of
Shares (as determined under Section 2.03) and the Selling Stockholder may sell a

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                                                                              4

number of Shares equal to the Selling Stockholder's Offered Shares, less the
aggregate number of Shares to be sold by the other Stockholders and Management
Stockholders exercising their Tag-Along Right, to the Third Party Offeror on the
terms and conditions of the Third Party Offer.

               2.06 NON-APPLICATION. The provisions of this Article II shall not
apply in connection with or as part of a registered public offering of any
securities of the Company in which any Stockholder or Management Stockholder
participates pursuant to the Registration Rights Agreement, or otherwise, or any
Transfer of Shares pursuant to Rule 144 promulgated under the Securities Act.

                                   ARTICLE III

                                DRAG-ALONG RIGHTS

               3.01 DRAG-ALONG RIGHT.

                    (a) INITIAL THREE-YEAR PERIOD. If, at any time from the
Closing Date until the third anniversary thereof, HWH or the Company receives an
offer from a third party (which is not an Affiliate of HWH) on an arm's length
basis to purchase all of the issued and outstanding capital stock, or all or
substantially all of the assets, of the Company (i) at a price that would result
in gross proceeds per Share (excluding any contingent, earnout or similar
payment, but including any proceeds (up to 15% of the aggregate gross proceeds
payable to the Buyers) that may be required to be held in escrow) to the Buyers
that represent the greater of (1) a premium of at least 20% over the per Share
purchase price that would apply if the Remaining Stockholder Put (as defined in
the Buy/Sell Agreement) were to be exercised, as determined in accordance with
Section 1.04 of the Buy/Sell Agreement, as if a Buy/Sell Initiation Notice (as
defined in the Buy/Sell Agreement) had been given on the date that HWH or the
Company receives the offer from the third party, and (2) the sum of (x) the
original purchase price per Share paid by the Buyers on the Closing Date, and
(y) an amount constituting an internal rate of return of at least 10% of the
original purchase price per Share paid by the Buyers on the Closing Date,
compounded annually from the Closing Date, and (ii) for consideration consisting
of cash and/or immediately freely tradable securities of a publicly traded
company with a market capitalization of at least $1,000,000,000 (the items in
clauses (i) and (ii), collectively referred to as the "Qualifying
Consideration"), then HWH may transfer all, but not less than all, of its Shares
to such third party and shall have the right to require the Management
Stockholders and the other Stockholders to sell all of their Shares on the same
terms and conditions and for the same consideration per Share; provided,
however, that following notice by HWH of its intention to exercise its rights
pursuant to this Section 3.01(a), the Buyers (or their permitted transferees
under Section 1.02) shall first have the opportunity to exercise and perfect
their rights under the Buy/Sell Agreement and, upon such exercise, HWH and the
Management Stockholders shall be required to exercise the Remaining Stockholder
Put, unless HWH revokes its intention to exercise its Drag-Along Right pursuant
to this Section 3.01(a) (which revocation may be made by HWH at any time prior
to the closing of the Remaining Stockholder Put). If HWH does so revoke its

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                                                                              5

intention to exercise its Drag-Along Right, within five days following notice
from HWH of such revocation, the Buyers shall have the right to revoke the
Buy/Sell Initiation Notice. If HWH does not revoke its intention to exercise its
Drag-Along Right in any such instance, and the Buyers have exercised their
rights under the Buy/Sell Agreement, then HWH's Drag-Along Right in connection
with such transaction shall be subject to the rights and obligations applicable
to the exercise of the Remaining Stockholder Put. For purposes of this Section
3.01(a) "immediately freely tradable securities" means securities that are
eligible for sale immediately under the Securities Act of 1933, as amended,
without volume or other limitations imposed by Rule 144 or 145 thereunder, and
have been listed on any national securities exchange or other market place on
which other securities of such class are then listed or otherwise eligible for
trading.

                    (b) AFTER INITIAL THREE-YEAR PERIOD. If, at any time after
the third anniversary of the Closing Date, HWH continues to own a majority of
the issued and outstanding shares of Common Stock and HWH desires to sell at
least a majority of its Shares in one transaction or a series of related
transactions (including a merger or consolidation) to a third party (which is
not an Affiliate of HWH) on an arm's length basis for Qualifying Consideration
at a price that would result in gross proceeds per Share (excluding any
contingent, earnout or similar payment, but including any proceeds (up to 15% of
the aggregate gross proceeds payable to the Buyers) that may be required to be
held in escrow) to the Buyers that represent the sum of (x) the original
purchase price per Share paid by the Buyers on the Closing Date, and (y) an
amount constituting an internal rate of return of at least 10% of the original
purchase price per Share paid by the Buyers on the Closing Date, compounded
annually from the Closing Date, then HWH shall have the right to require the
Management Stockholders and the other Stockholders to sell to such third party
the same PRO RATA amount of their respective Shares as is being sold by HWH on
the same terms and conditions and for the same consideration per Share, in
accordance with clause (ii) of Section 3.02; provided, that as a condition to
the exercise of the Drag-Along Right during the period after the third
anniversary of the Closing Date, HWH shall have obtained, at the expense of the
Company, an opinion from a nationally-recognized investment bank mutually
acceptable to HWH and the Buyers, in the exercise of their reasonable
discretion, that the terms and conditions of the transaction (including the
amount and form of consideration) with respect to which HWH seeks to exercise
its Drag-Along Right are fair to the Stockholders and the Management
Stockholders from a financial point of view.

                    (c) NO ALTERATION; CONSISTENT TERMS. Notwithstanding
anything to the contrary in this Agreement, in no event shall any transaction
consummated pursuant to the Drag-Along Right provided pursuant to Section 3.01
be consummated upon terms and conditions that are (x) in conflict with the
rights of the parties under this Agreement or the Buy/Sell Agreement, or (y) on
terms that are more onerous to the Dragged-Along Sellers than to HWH; provided,
that any transaction in which the Dragged-Along Sellers are required to bear
more than their PRO RATA share of any expenses of such transaction, or assume
escrow or indemnification obligations that are disproportionate to their PRO
RATA share of any consideration issued in such transaction, shall be deemed to
be PER SE more onerous. The parties acknowledge and agree that the assumption of
any escrow or indemnification obligations in connection with the consummation of

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                                                                              6

a Drag-Along Right shall in no event be deemed to be in conflict with the rights
of the parties under this Agreement.

               3.02 DRAG-ALONG PROCEDURE. If HWH desires to exercise its rights
pursuant to either Section 3.01(a) or 3.01(b) (the "Drag-Along Right"), HWH
shall send written notice (the "Drag-Along Notice") to the Company, the
Management Stockholders and the other Stockholders (the "Dragged-Along Sellers")
notifying them that (i) in the case of Section 3.01(a), they will be required to
sell all (but not less than all) of their Shares in such sale, or (ii) in the
case of Section 3.01(b), they will be required to sell that number of their
Shares (but not less than such number of their Shares) that is equal to the
product of (x) the number of Shares held by such Dragged-Along Seller and (y) a
fraction, the numerator of which is the number of Shares proposed to be sold by
HWH, and the denominator of which is the total number of Shares owned by HWH
(such number of Shares to be subject to the Drag-Along Right, the "Drag-Along
Amount").

               3.03 DRAG-ALONG NOTICE. The Drag-Along Notice shall set forth (a)
the name and address of the transferee and (b) a copy of the written proposal
pursuant to which the transfer will be effected, containing all of the material
terms and conditions thereof, including (i) the number of Shares proposed to be
transferred by HWH, (ii) the percentage of the Shares being sold by HWH
vis-a-vis all the Shares owned by HWH in the case of a transfer under Section
3.01(b), (iii) the price per Share to be paid, (iv) the terms and conditions of
payment offered by the transferee, (v) whether HWH has determined to exercise
the Drag-Along Right, (vi) if HWH has determined to exercise the Drag-Along
Right, that the transferee has been informed of the Drag-Along Right provided
for in this Article III and has agreed to purchase the applicable Drag-Along
Amount of each Dragged-Along Seller in accordance with the terms hereof, and
(vii) the date and location of and procedures for selling the Shares to the
transferee.

               3.04 MECHANICS OF SALE. Upon receipt of a Drag-Along Notice, each
Dragged-Along Seller receiving such notice shall be obligated to (i) sell all of
its Shares or its Drag-Along Amount, as the case may be, in the transaction
(including a sale or merger) as contemplated by the Drag-Along Notice on the
same terms and conditions as HWH and (ii) otherwise take all reasonably
necessary action to cause the consummation of such transaction, including voting
its Shares in favor of such transaction and not exercising any appraisal rights
in connection therewith. Each Dragged-Along Seller further agrees to take all
actions (including executing documents) in connection with the consummation of
the proposed transaction as may reasonably be requested of it by HWH.

               3.05 WAIVER OF APPRAISAL RIGHTS. Each Stockholder and each
Management Stockholder hereby agrees not to demand, and hereby waives, any and
all rights to obtain payment of the fair value of its Shares pursuant to Section
262 of the Delaware General Corporation Law or otherwise arising in connection
with the consummation of any merger (each, a "Required Merger") in connection
with which HWH has exercised its Drag-Along Rights, or in connection with the
exercise of the Remaining Stockholder Put, and the approval, execution and
delivery of any merger agreement in connection with any such transaction.

<PAGE>
                                                                              7

               3.06 VOTING AGREEMENT; PROXY. Each Stockholder and each
Management Stockholder hereby agrees that, during the term of this Agreement, at
any meeting of the stockholders of the Company, however called, or any
adjournment thereof, or by written consent, such Stockholder or Management
Stockholder shall be present (in person or by proxy) and vote (or cause to be
voted), or execute a written consent in respect of, all of its Shares (i) in
favor of ratification or approval of any merger agreement to be entered into in
connection with a Required Merger, and the consummation of any Required Merger,
and (ii) against any action or agreement that would be in any way inconsistent
or in conflict with any Required Merger. Each Stockholder (other than the
Buyers) and each Management Stockholder hereby appoints HWH as such
Stockholder's or Management Stockholder's attorney and proxy with full power of
substitution, to vote, and otherwise act (by written consent or otherwise) with
respect to the Shares of such Stockholder or Management Stockholder, solely on
the matters and in the manner specified in this Section 3.06.

               3.07 NON-APPLICATION. The provisions of this Article III shall
not apply in connection with or as part of a registered public offering of any
securities of the Company in which any Stockholder or Management Stockholder
participates pursuant to the Registration Rights Agreement, or otherwise, or any
Transfer of Shares pursuant to Rule 144 promulgated under the Securities Act.

                                   ARTICLE IV

                                PREEMPTIVE RIGHTS

               4.01 GENERAL. The Company shall not issue any shares of Common
Stock or any Equity Securities ("Offered Shares") to any Person (other than
shares of Common Stock or any Equity Securities issued pursuant to (a) options
or shares of Common Stock issued upon the exercise of any stock options granted
under the Option Plans, (b) any stock split, stock dividend or other similar
stock recapitalization that affects all holders of shares of Common Stock
equivalently, or (c) any shares of Common Stock or any Equity Securities issued
upon the exercise, conversion or exchange of any Equity Securities in accordance
with the terms thereof), unless the Company has offered in writing to the
Stockholders (the "Preemptive Notice") the right to purchase, at the same price
and on the same terms as the Offered Shares, a portion of the Offered Shares
equal to the product of (i) the total number of Offered Shares and (ii) a
fraction, the numerator of which is the number of Shares owned by such
Stockholder and the denominator of which is the total number of issued and
outstanding shares of Common Stock (the "Preemptive Right"). If the Offered
Shares are being issued in connection with the issuance of any other securities
or the incurrence of any debt by the Company ("Other Securities or Debt"), each
Stockholder shall be required to purchase its proportionate share of such Other
Securities or Debt in order to exercise its Preemptive Right. Each Stockholder
shall have the right to accept the offer for all or a portion of its portion of
the Offered Shares as calculated in accordance with this Article IV by written
notice to the Company within 15 days of receipt by such Stockholder of the
Preemptive Notice.

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                                                                              8

                                   ARTICLE V

                          DIRECTORS; INFORMATION RIGHTS

               5.01 SIZE OF THE BOARD. As of the Closing Date, and until amended
in accordance with applicable law and the certificate of incorporation and
by-laws of the Company, the number of directors constituting the entire board of
directors of the Company (the "Board") shall be seven, subject to Sections
5.02(b), (c) and (d).

               5.02 COMPOSITION OF THE BOARD; BOARD COMMITTEES.

                    (a) As of the Closing Date and, except as provided in
Sections 5.02(b) and 5.02(c), thereafter during the term of this Agreement, the
Board shall consist of the following individuals:

                              (i) if and for so long as HWH collectively owns at
               least 45% of the issued and outstanding Shares, HWH shall
               nominate four directors;

                              (ii) if and for so long as the Buyers own, in the
               aggregate, at least 25% of the issued and outstanding Shares, the
               Buyers shall jointly nominate two directors; and

                              (iii) the chief executive officer of the Company.

                  (b) If and for so long as the Buyers own, in the aggregate,
16% or more, but less than 25%, of the issued and outstanding Shares, the Buyers
shall have the right jointly to nominate one director only. If the Buyers own,
in the aggregate, less than 16% of the issued and outstanding Shares, the Buyers
shall not have the right to nominate any directors.

                    (c) If and for so long as HWH owns 35% or more, but less
than 45%, of the issued and outstanding Shares, HWH shall have the right to
nominate three directors. If and for so long as HWH owns 25% or more, but less
than 35%, of the issued and outstanding Shares, HWH shall have the right to
nominate two directors. If and for so long as HWH owns 16% or more, but less
than 25%, of the issued and outstanding Shares, HWH shall have the right to
nominate one director only. If HWH owns less than 16% of the issued and
outstanding Shares, HWH shall not have the right to nominate any directors.

                    (d) The Stockholders and the Management Stockholders agree
to take all such actions as may be necessary or appropriate to reduce the number
of directors constituting the entire Board to implement the provisions of
Sections 5.02(b) and 5.02(c).

                    (e) The Stockholders agree that any committee of the Board
shall be comprised of such number of directors nominated by HWH and the Buyers,

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                                                                              9

respectively, as is approximately proportionate to the number of directors that
HWH and the Buyers have the right to nominate to the entire Board.

               5.03 ELECTION AND REMOVAL OF DIRECTORS.

                    (a) ELECTION OF DIRECTORS. By written notice to the other
Stockholders, prior to or at the Company's annual stockholders' meeting, or any
other meeting at which directors of the Company are to be elected, HWH and the
Buyers shall designate nominees to the Board in accordance with their rights
pursuant to Section 5.02. At the annual stockholders' meeting, each Stockholder
shall take all necessary or desirable action, including the voting of its
Shares, to elect the directors nominated by HWH and the Buyers, and to elect the
chief executive officer of the Company as a director.

                    (b) REMOVAL OF DIRECTORS. If at any time HWH or the Buyers
notify the other of their wish to remove at any time and for any reason (or no
reason) any of the directors nominated by such Stockholders, then the
Stockholders shall vote all of their Shares so as to remove such director and to
replace such director with a nominee of the relevant Stockholders, or, if
applicable, shall cause their nominees on the Board to vote in favor of the
removal of such director and the appointment of his replacement.

               5.04 DECISIONS OF THE BOARD OF DIRECTORS. Subject to Section
5.05, all matters and decisions requiring action by the Board shall be taken by
a simple majority vote of the entire Board.

               5.05 CONSENT RIGHTS.

                    (a) Subject to Section 5.05(b), the following actions shall
not be taken by the Company or any Subsidiary without the prior written consent
of the Buyers:

                              (i) any acquisition or disposition of assets
               (including the acquisition of shares of capital stock of another
               Person, whether by merger, stock purchase or otherwise) other
               than in the ordinary course of business or involving an amount of
               consideration in excess of $15,000,000 in any single instance
               (including any series of related transactions);

                              (ii) the incurrence of any additional debt
               obligations by the Company or any Subsidiary other than in the
               ordinary course of business or in excess of $15,000,000 in any
               single instance (including any series of related transactions) or
               in excess of $50,000,000 in the aggregate;

                              (iii) the discharge of the chief executive
               officer, the chief operating officer or the chief financial
               officer of the Company other than for cause (as determined by a
               majority of the entire Board), and the hiring of any replacement
               thereof;

<PAGE>
                                                                              10

                              (iv) changing the principal business of the
               Company;

                              (v) any amendment or modification of the
               certificate of incorporation or by-laws of the Company that
               materially and adversely affects the rights of the Buyers set
               forth in this Agreement, the Stock Purchase Agreement, the
               Buy/Sell Agreement or the Registration Rights Agreement, or any
               amendment or modification that reduces or limits the provisions
               relating to the exculpation or indemnification of directors or
               officers of the Company or any amendment or modification of the
               certificate of incorporation of the Company that creates any
               securities of the Company which (x) would impair or render
               substantially more cumbersome the rights of the Buyers under this
               Agreement or the Buy/Sell Agreement, or (y) provides for the
               payment of cash dividends or mandatory redemption, in each case,
               prior to the third anniversary of the Closing Date; provided,
               that for so long as the Buyers have the right to nominate any
               director to the Board as provided in Section 5.02, any amendment
               or modification of the certificate of incorporation or by-laws of
               the Company that changes the number of directors on the Board
               (other than any amendment or modification to effectuate the
               provisions of Section 5.02(b) or 5.02(c)) shall be deemed
               automatically to so adversely affect the rights of the Buyers;

                              (vi) (1) any material transaction (provided, that
               any transaction involving an amount, or obligations, equal to or
               exceeding $1,000,000 shall be deemed to be PER SE material)
               between the Company or any Subsidiary, on the one hand, and any
               Stockholder or any Affiliate of a Stockholder, on the other hand,
               that is on terms materially less favorable than those that might
               have been reasonably obtained in a comparable transaction at such
               time from a Person which is not an Affiliate; provided, that HWH
               shall be required to give at least 15 days advance notice of any
               transaction between HWH or any of its Affiliates (other than
               TheCampusHub.com, Inc., a Delaware corporation
               ("TheCampusHub.com")), on the one hand, and the Company and any
               Subsidiary, on the other hand, or (2) any material transaction
               between the Company or any Subsidiary, on the one hand, and
               TheCampusHub.com, on the other hand, including but not limited
               to, (i) the making of any loan to TheCampusHub.com, or (ii) the
               making of any equity investment in TheCampusHub.com (including
               but not limited to pursuant to the exercise of any rights to
               purchase additional shares of capital stock of TheCampusHub.com
               pursuant to the Equity Option Agreement described on Schedule
               3.19 to the Stock Purchase Agreement), provided, that the
               performance by the Company under the agreements set forth on
               Schedule 3.19 to the Stock Purchase Agreement in substantially
               the manner being currently performed shall not require the
               consent of the Buyers, and provided, further, however, that the
               Company shall not be permitted to amend or modify such agreements
               between the Company and TheCampusHub.com without the consent of
               the Buyers;

<PAGE>
                                                                              11

                              (vii) any voluntary liquidation of the Company
               (except any such liquidation, dissolution, merger or
               consolidation of the Company in connection with (x) the
               disposition of any assets of the Company or any Subsidiary, or
               (y) the acquisition by the Company of the assets or business of
               any other Person, subject, in either case, to the consent rights
               in clause (i) of Section 5.05(a), if applicable);

                              (viii) the issuance of any options to acquire
               shares of Common Stock pursuant to the Option Plans (x) which
               would cause the number of shares of Common Stock issuable under
               options issued pursuant to the Option Plans to exceed the sum of
               (A) 7.5% of the issued and outstanding shares of Common Stock (on
               a fully-diluted, as converted basis), plus (B) the total number
               of shares of Common Stock issuable under options permitted to be
               issued under the Option Plans as of the date hereof, or (y) with
               an exercise price less than the fair market value of the shares
               of Common Stock issuable thereunder as determined by the Board;

                              (ix) the sale of all or substantially all of the
               assets of the Company, unless upon the prompt distribution of the
               proceeds of such sale, the Buyers would receive gross proceeds
               per Share in an amount at least equal to the minimum amount
               required for the exercise by HWH of its rights under Section
               3.01(a) or 3.01(b), as the case may be, subject to any escrow
               permitted under such Section; or

                              (x) the declaration or payment of any dividends
               on, or the redemption of, any securities of, the Company (other
               than the declaration and payment of dividends PRO RATA on the
               outstanding shares of Common Stock), or the issuance of any
               securities of the Company which would impair or render
               substantially more cumbersome the rights of the Buyers under the
               Buy/Sell Agreement.

                    (b) The Buyer's consent rights described in (x) clauses (i),
(ii), (iii) and (x) of Section 5.05(a) shall, subject to Section 8.01(b),
terminate on the third anniversary of the Closing Date, (y) all clauses of
Section 5.05(a) (except clause (vi)) shall terminate if the Buyers cease to own,
in the aggregate, at least 10% of the issued and outstanding Shares, and (z) all
clauses of Section 5.05(a) shall terminate on the date the Buyers cease to own,
in the aggregate, any Shares, or as otherwise contemplated by Section 8.01(b).

               5.06 INFORMATION RIGHTS. The Buyers shall be entitled to receive:

                    (a) so long as the Buyers have the right to nominate any
director to the Board as provided in Section 5.02, copies of all documents
delivered to the Board;

                    (b) so long as the Buyers own, in the aggregate at least 5%
of the issued and outstanding Shares, copies of all reports and other filings

<PAGE>
                                                                              12

filed by the Company with the Commission pursuant to the applicable requirements
of the Securities Exchange Act of 1934, as amended, and the rules and
regulations of the Commission promulgated thereunder, whether the Company is
required by applicable law to file any such reports or other filings thereunder
or files such reports or other filings as required by the holders of the debt
issued under any Indenture (which shall be provided to the Buyers as soon as
practicable after the filing of the same with the Commission), except that, if
the Company does not file any such reports or other filings thereunder, copies
of annual audited consolidated financial statements of the Company and the
Subsidiaries (which shall be provided to the Buyers within 90 days after the end
of each fiscal year of the Company), and quarterly unaudited consolidated
financial statements of the Company and the Subsidiaries (which shall be
provided to the Buyers within 45 days after the end of the first three fiscal
quarters of the Company); and

                    (c) so long as the Buyers own, in the aggregate, at least
10% of the issued and outstanding Shares, such other information relating to the
Company or any Subsidiary as any Buyer may reasonably request which is readily
available or does not require the Company to incur any unreasonable cost or
expense to obtain or make available to such Buyer; provided, that in connection
with the anticipated delivery of a Buy/Sell Initiation Notice under the Buy/Sell
Agreement, the Buyers and their prospective lenders and financial parties shall
be entitled to conduct a due diligence investigation of reasonable and customary
scope.

               5.07 NOTICE OF OFFER. If HWH or the Company receives a bona fide
offer from a third party relating to the acquisition of all of the outstanding
shares of capital stock, or all or substantially all of the assets, of the
Company, which HWH intends to pursue, HWH shall promptly, and in any event at
least 30 days prior to the consummation of such transaction, give written notice
thereof to the Buyers, which notice shall set forth (a) the identity of the
third party offeror, and (b) a summary of the material terms and conditions of
such offer. The Buyers shall keep confidential the information contained in any
such notice. In addition, from the date of receipt of such notice until the
earlier of (i) any public announcement or release of such offer, or (ii) receipt
by the Buyers of notice from HWH of HWH's decision not to pursue such offer, the
Buyers shall not acquire or dispose of any beneficial ownership of any publicly
traded securities of the Company or the Principal Subsidiary, including debt
securities issued under the Indentures, except in accordance with the terms of
Section 1.05 or Articles II and III and all applicable securities laws.

                                   ARTICLE VI

                            STOCK CERTIFICATE LEGEND

               6.01 GENERAL. A copy of this Agreement shall be filed with the
Secretary of the Company and kept with the records of the Company. Each
certificate representing Shares shall, at the option of the Company, for as long
as this Agreement is effective, bear a legend as follows:

<PAGE>
                                                                              13

               THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
               REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR UNDER
               THE SECURITIES LAWS OF ANY STATE. NO TRANSFER, SALE OR OTHER
               DISPOSITION OF THIS CERTIFICATE MAY BE MADE UNLESS A REGISTRATION
               STATEMENT WITH RESPECT TO THIS CERTIFICATE HAS BECOME EFFECTIVE
               UNDER SUCH ACT AND SUCH REGISTRATION OR QUALIFICATION AS MAY BE
               NECESSARY UNDER THE SECURITIES LAWS OF ANY STATE HAS BECOME
               EFFECTIVE, OR THE COMPANY HAS BEEN FURNISHED WITH AN OPINION OF
               COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT
               REQUIRED. NEITHER THE UNITED STATES SECURITIES AND EXCHANGE
               COMMISSION NOR ANY OTHER FEDERAL OR STATE REGULATORY AUTHORITY
               HAS PASSED ON OR ENDORSED THE MERITS OF THESE SECURITIES.

               THE SALE, GRANT, ASSIGNMENT, HYPOTHECATION, PLEDGE, ENCUMBRANCE,
               GRANT OF A SECURITY INTEREST IN OR OTHER DISPOSITION OF THE
               SECURITIES REPRESENTED BY THIS CERTIFICATE IS RESTRICTED BY THE
               TERMS OF THE STOCKHOLDERS AGREEMENT, DATED AS OF JULY 11, 2002,
               AMONG THE COMPANY, HWH CAPITAL PARTNERS, L.P., HWH CORNHUSKER
               PARTNERS, L.P., WESTON PRESIDIO CAPITAL III, L.P., WESTON
               PRESIDIO CAPITAL IV, L.P., WPC ENTREPRENEUR FUND, L.P., WPC
               ENTREPRENEUR FUND II, L.P., AND THE OTHER STOCKHOLDERS PARTY
               THERETO, AS AMENDED, MODIFIED OR OTHERWISE SUPPLEMENTED FROM TIME
               TO TIME, A COPY OF WHICH MAY BE INSPECTED AT THE COMPANY'S
               PRINCIPAL OFFICE.

                                  ARTICLE VII

                                  DEFINITIONS

               7.01 CERTAIN DEFINITIONS. As used in this Agreement, the
following terms have the following meanings, unless the context otherwise
requires:

<PAGE>
                                                                              14

               "AFFILIATE" of any particular Person means any other Person
controlling, controlled by or under common control with such particular Person.

               "BUY/SELL AGREEMENT" means the Buy/Sell Agreement, dated as of
even date herewith, by and among HWH, the Buyers and the other stockholders
listed on the signature pages thereto.

               "COMMISSION" means the Securities and Exchange Commission or any
similar agency then having jurisdiction to enforce the Securities Act.

               "COMPETITOR" means, as of any date, (a) any Person (other than
the Company or any of its Affiliates) (i) that directly or indirectly derived in
excess of $5,000,000 in gross revenues during any of the immediately preceding
three fiscal years of such Person from the college bookstore industry, or (ii)
which is a party to a material judicial proceeding pending against the Company
or any of its Affiliates, or (b) any Person that is entitled, directly or
indirectly, whether through ownership of stock, contract or otherwise, to elect
a majority of the board of directors or similar governing body of, or otherwise
directly or indirectly controls or is controlled by or is under direct or
indirect common control with, any Person described in clause (a). The definition
of "Competitor" shall specifically exclude any Person that would otherwise be a
Competitor as the result of a passive, indirect investment in an investment fund
or similar entity; provided, that any Transfer of Shares to such Person shall
not have a competitively adverse effect upon the Company.

               "CONTROL" when used with respect to any Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controls" and "controlled" have meanings correlative to the
foregoing.

               "EQUITY SECURITIES" means any security exercisable for, or
convertible or exchangeable into, shares of Common Stock.

               "INDENTURES" means (i) the 8.75% senior subordinated notes of the
Principal Subsidiary due 2008, issued under the Indenture, dated as of February
13, 1998, between the Principal Subsidiary and The Bank of New York, as
successor, and (ii) the 10.75% senior discount debentures of the Company due
2009, issued under the Indenture, dated as of February 13, 1998, between the
Company and The Bank of New York, as successor.

               "OPTION PLANS" means (i) the NBC Acquisition Corp. 1998
Performance Stock Option Plan, as amended, (ii) the NBC Acquisition Corp. 1998
Stock Option Plan, as amended, and (iii) any successor option plans of the
Company.

               "PERSON" means an individual, a partnership, a corporation, a
limited liability company, an association, a joint stock company, a trust, a
joint venture, an unincorporated organization and a governmental body.

<PAGE>
                                                                              15

               "PRINCIPAL SUBSIDIARY" means Nebraska Book Company, Inc., a
Kansas corporation.

               "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights
Agreement, dated as of even date herewith, by and among the Company, HWH and the
Buyers.

               "SECURITIES ACT" means the Securities Act of 1933, as amended,
and the rules and regulations promulgated thereunder.

               "SHARES" means, with respect to each Stockholder and Management
Stockholder, all shares of Common Stock whether now owned or hereafter acquired,
by such Stockholder or Management Stockholder.

               "STOCKHOLDERS" means (i) HWH Capital, (ii) HWH Cornhusker, (iii)
Buyer 1, (iv) Buyer 2, (v) Buyer 3, (vi) Buyer 4, and (vii) any permitted
transferee of HWH or the Buyers, to whom Shares are transferred in accordance
with Section 1.02 or 1.03; and the term "Stockholder" shall mean any of the
foregoing Persons, but shall expressly exclude the Management Stockholders.

               "SUBSIDIARY" means the Principal Subsidiary and any other Person,
of which at least a majority of the securities or interests having by the terms
thereof, ordinary voting power to elect at least a majority of the board of
directors or other similar governing body of such Person, that is directly or
indirectly owned or controlled by the Company or by any one or more of the
Subsidiaries or by the Company and any one or more of the Subsidiaries.

               7.02 OTHER DEFINED TERMS. The following capitalized terms are
defined in the following Sections of this Agreement:

<PAGE>
                                                                              16

TERM                                                                   SECTION
Agreement..........................................................   Preamble
Board..............................................................   5.01
Buyer(s)...........................................................   Preamble
Buyer 1............................................................   Preamble
Buyer 2............................................................   Preamble
Buyer 3............................................................   Preamble
Buyer 4............................................................   Preamble
Closing Date.......................................................   1.02
Company............................................................   Preamble
Common Stock.......................................................   Recital A
Drag-Along Amount..................................................   3.02
Drag-Along Notice..................................................   3.02
Drag-Along Right...................................................   3.02
Dragged-Along Sellers..............................................   3.02
HWH................................................................   Preamble
HWH Capital........................................................   Preamble
HWH Cornhusker.....................................................   Preamble
Management Stockholder(s)..........................................   Preamble
Notice Period......................................................   2.04
Offered Shares.....................................................   4.01
Other Securities or Debt...........................................   4.01
Preemptive Notice..................................................   4.01
Preemptive Right...................................................   4.01
Qualifying Consideration...........................................   3.01(a)
Required Merger....................................................   3.05
Selling Stockholder................................................   2.01
Selling Stockholder's Offered Shares...............................   2.01
Stock Purchase Agreement...........................................   Recital B
Tag-Along Notice...................................................   2.02
Tag-Along Right....................................................   2.01
TheCampusHub.com...................................................   5.05(v)(i)
Third Party Offer..................................................   2.01
Third Party Offeror................................................   2.01
Transfer...........................................................   1.01

               7.03 HWH/BUYERS. Any action or decision to be made or any right
exercisable by HWH under this Agreement, including any consent to be given
hereunder, any amendment of this Agreement or any waiver of any provision of
this Agreement, shall be made by holders of a majority-in-interest of the Shares
owned by HWH and its permitted transferees under the Stockholders Agreement and
shall be binding on HWH and all such permitted transferees. Any action or
decision to be made or any right exercisable by the Buyers under this Agreement,
including any consent to be given hereunder, any amendment of this Agreement or
any waiver of any provision of this Agreement, shall be made by holders of a
majority-in-interest of the Shares owned by the Buyers and their permitted
transferees and shall be binding on the Buyers and all such permitted
transferees.

<PAGE>
                                                                              17

                                  ARTICLE VIII

                                  MISCELLANEOUS

               8.01 EFFECTIVE DATE; TERMINATION.

                    (a) This Agreement shall become effective on the Closing
Date.

                    (b) This Agreement shall terminate upon the earlier of the
following to occur:

                              (i) the mutual consent of the Buyers and HWH to
               terminate this Agreement; and

                              (ii) the later of (A) the third anniversary of the
               Closing Date or (B) the consummation of a public offering of the
               shares of Common Stock pursuant to an underwritten public
               offering resulting in aggregate cash proceeds to the Company of
               at least $50,000,000 (provided, however, that Section 5.02 shall
               survive a termination under this clause (ii) for so long as the
               Buyers own sufficient Shares to be entitled to nominate at least
               one director under Section 5.02).

               8.02 CONFIDENTIALITY.

                    (a) Each party undertakes that it shall not reveal to any
third party any confidential or proprietary information concerning the
organization, business, finance, transactions or affairs (i) of the Company or
the Subsidiary (as defined in the Stock Purchase Agreement) without the prior
written consent of the other parties, or (ii) of any Stockholder or Management
Stockholder or Affiliate thereof without the prior written consent of such
Stockholder or Management Stockholder.

                    (b) The provisions of Section 8.02(a) shall not apply to:

                              (i) information that is publicly available (except
               by virtue of a breach of this Agreement);

                              (ii) a disclosure to legal, financial or
               professional advisors, auditors or bankers of any party on a
               need-to-know basis, provided that each such Person is informed of
               the confidential nature of such information and agrees to treat
               such information confidential; or

                              (iii) a disclosure to a regulatory authority or
               which the disclosing party reasonably believes it is required to
               make under the rules of any stock exchange or by applicable laws
               or governmental regulations or regulatory process or in
               connection with any judicial process regarding any legal action,
               suit or proceeding arising out of or relating to this Agreement.

<PAGE>
                                                                              18

               8.03 BY-LAW AMENDMENTS.

                    (a) Promptly after the Closing Date, HWH and the Buyers
shall cause their nominees on the Board to adopt resolutions to amend:

                              (i) The second sentence of Article I, Section 1.2
          of the by-laws of the Company so that it reads as follows:

               "A special meeting of the stockholders shall be called by the
               President or any Vice President whenever stockholders owning at
               least 10% of the shares of the Corporation then issued and
               outstanding and entitled to vote on matters to be submitted to
               stockholders of the Corporation shall make application therefor
               in writing."

                              (ii) The second sentence of Article II, Section
          2.5 of the by-laws of the Company so that it reads as follows:

               "Except as otherwise required by law, notice of each special
               meeting shall be mailed to each director, addressed to such
               director at such director's residence or usual place of business,
               at least five days before the day on which the meeting is to be
               held, or shall be sent to such director at such place by
               facsimile or electronic mail transmission or telephoned or
               delivered to him personally, not later than the third day before
               the day on which the meeting is to be held."

                    (b) So long as the Buyers own, in the aggregate, (i) at
least 10% of the issued and outstanding Shares, neither HWH nor the Buyers shall
cause or permit an amendment to Article I, Section 1.2 of the by-laws of the
Company after the amendment set forth in Section 8.03(a)(i) has been adopted,
and (ii) at least 16% of the issued and outstanding Shares, neither HWH nor the
Buyers shall cause or permit an amendment to Article II, Section 2.5 of the
by-laws of the Company after the amendment set forth in Section 8.03(a)(ii) has
been adopted.

               8.04 NOTICES. All notices, demands and other communications to be
given or delivered under or by reason of the provisions of this Agreement shall
be in writing and shall be delivered personally, sent by facsimile transmission,
sent by a nationally recognized courier service or by first class mail, postage
prepaid. Any such notice shall be deemed given when delivered personally or if
sent by facsimile, at the time of receipt of a legible copy thereof or, if sent
by nationally recognized courier service, two days after the date of deposit
with the courier service, or if by first class mail, three days after the date
of deposit in the mail, and shall be sent as follows:

<PAGE>
                                                                              19

                      (a)    if to the Buyers:

                                 Weston Presidio Capital
                                 200 Clarendon Street, 50th Floor
                                 Boston, MA 02116
                                 Attention: Mark L. Bono
                                 Facsimile No.:  (617) 988-2515

                                 with copies to:

                                 Weston Presidio Capital
                                 Pier 1, Bay 2
                                 San Francisco, CA 94111
                                 Attention:  Therese A. Mrozek
                                 Facsimile No.:  (415) 398-0990

                                 and

                                 Bingham McCutchen LLP
                                 150 Federal Street
                                 Boston, MA 02110
                                 Attention:  Johan V. Brigham
                                 Facsimile No.:  (617) 951-8736

                      (b)    if to the Company or HWH:

                                 HWH Capital Partners, L.P.
                                 c/o Haas Wheat & Partners, L.P.
                                 300 Crescent Court - Suite 1700
                                 Dallas, TX  75201
                                 Attention: Robert B. Haas,
                                 Douglas D. Wheat, and Wyche Walton
                                 Facsimile No.: (214) 871-8364, and
                                 (214) 871-8357

                                 with a copy to:

                                 Paul, Weiss, Rifkind, Wharton & Garrison
                                 1285 Avenue of the Americas
                                 New York, NY 10019-6064
                                 Attention:  Robert M. Hirsh
                                 Facsimile No.:  (212) 757-3990

                      (c)    if to any Management Stockholder, to his address as
                             recorded in the books of the Company.

Any party may by notice given in accordance with this Section 8.04 to the other
parties designate another address, facsimile number or Person for receipt of
notices hereunder.

<PAGE>
                                                                              20

               8.05 ASSIGNMENT. This Agreement shall be binding upon and inure
to the benefit of the parties hereto and their respective successors and
permitted assigns. This Agreement and the rights of the parties hereunder are
not assignable.

               8.06 NO THIRD PARTY BENEFICIARIES. No provision of this Agreement
is intended to, or shall, confer any third party beneficiary or other rights or
remedies upon any Person other than the parties hereto.

               8.07 SEVERABILITY. Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be prohibited
by or invalid under applicable law, such provision shall be ineffective only to
the extent of such prohibition or invalidity, without invalidating the remainder
of such provision or the remaining provisions of this Agreement.

               8.08 AMENDMENT AND WAIVER. Any provision of this Agreement may be
amended or waived only in writing signed by each of HWH, the Buyers and the
Company. No waiver of any provision hereunder or any breach or default hereof
shall extend to or affect in any way any other provision or prior or subsequent
breach or default. No delay on the part of any party in exercising any right,
power or privilege hereunder shall operate as a waiver thereof, nor shall any
waiver on the part of any party of any such right, power or privilege, nor any
single or partial exercise of any such right, power or privilege, preclude any
further exercise thereof or the exercise of any other such right, power or
privilege.

               8.09 USAGE. All pronouns and any variations thereof refer to the
masculine, feminine or neuter, singular or plural, as the context may require.
All terms defined in this Agreement in their singular or plural forms have
correlative meanings when used herein in their plural or singular forms,
respectively. Unless otherwise expressly provided, the words "include,"
"includes" and "including" do not limit the preceding words or terms and shall
be deemed to be followed by the words "without limitation."

               8.10 ARTICLES AND SECTIONS. All references herein to Articles and
Sections shall be deemed references to such parts of this Agreement, unless the
context shall otherwise require. The Article and Section headings in this
Agreement are for reference only and shall not affect the interpretation of this
Agreement.

               8.11 NO STRICT CONSTRUCTION. The language used in this Agreement
shall be deemed to be the language chosen by the parties hereto to express their
mutual intent, and no rule of strict construction shall be applied against any
Person.

               8.12 GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York without regard to
principles of conflicts of law.

               8.13 CONSENT TO JURISDICTION AND SERVICE OF PROCESS. Any legal
action, suit or proceeding arising out of or relating to this Agreement or the
transactions contemplated hereby shall be instituted in any state or federal

<PAGE>
                                                                              21

court in the State of New York located in New York County and each party agrees
not to assert, by way of motion, as a defense or otherwise, in any such action,
suit or proceeding, any claim that it is not subject personally to the
jurisdiction of such court, that its property is exempt or immune from
attachment or execution, that the action, suit or proceeding is brought in an
inconvenient forum, that the venue of the action, suit or proceeding is improper
or that this Agreement, or the subject matter hereof may not be enforced in or
by such court. Each party further irrevocably submits to the exclusive
jurisdiction of any such court in any such action, suit or proceeding. Any and
all service of process and any other notice in any such action, suit or
proceeding shall be effective against any party if given by registered or
certified mail, return receipt requested, or by any other means of mail that
requires a signed receipt, postage prepaid, mailed to such party as herein
provided. Nothing contained herein shall be deemed to affect the right of any
party to serve process in any manner permitted by law.

               8.14 WAIVER OF JURY. EACH OF THE PARTIES HERETO HEREBY AGREES TO
WAIVE ITS RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION
BASED UPON OR ARISING OUT OF THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED
HEREBY. THE SCOPE OF THIS WAIVER IS INTENDED TO BE ALL-ENCOMPASSING OF ANY AND
ALL DISPUTES THAT MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT
MATTER OF THIS AGREEMENT, INCLUDING CONTRACT CLAIMS, TORT CLAIMS, BREACH OF DUTY
CLAIMS AND ALL OTHER COMMON LAW AND STATUTORY CLAIMS. EACH PARTY HERETO FURTHER
REPRESENTS AND WARRANTS THAT IT HAS REVIEWED THIS WAIVER WITH ITS LEGAL COUNSEL
AND THAT IT KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY TRIAL RIGHTS FOLLOWING
CONSULTATION WITH LEGAL COUNSEL.

               8.15 SPECIFIC PERFORMANCE. The parties hereto intend that,
without limiting any other remedies of such parties hereunder, each of the
parties shall have the right to obtain specific performance if any other party
hereto fails to perform such party's obligations hereunder.

               8.16 COMPLETE AGREEMENT. This Agreement contains the complete
agreement among the parties hereto and supersedes any prior understandings,
agreements or representations by or among the parties, written or oral, which
may have related to the subject matter hereof in any way.

               8.17 COUNTERPARTS. This Agreement may be executed in multiple
counterparts, any one of which need not contain the signatures of more than one
party, but all such counterparts taken together shall constitute one and the
same instrument.

                  [Remainder of Page Intentionally Left Blank]

<PAGE>
                                                                              22

               IN WITNESS WHEREOF, the parties hereto have executed this
Agreement as of the date first above written.

                                 HWH CAPITAL PARTNERS, L.P.

                                 By: HWH, L.P., its general partner
                                     By:  HWH Incorporated, its general
                                          partner

                                          By: /s/  Douglas D. Wheat
                                              ---------------------
                                              Name:
                                              Title:

                                 HWH CORNHUSKER PARTNERS, L.P.

                                 By: HWH Cornhusker, L.P., its general partner
                                     By:  HWH Cornhusker Incorporated,
                                          its general partner

                                          By: /s/  Douglas D. Wheat
                                              ---------------------
                                              Name:
                                              Title:

                                 WESTON PRESIDIO CAPITAL III, L.P.

                                 By: Weston Presidio Capital Management
                                     III, LLC

                                          By:/s/  Mark L. Bono
                                             ---------------------
                                          Name:  Mark L. Bono
                                          Title:   Authorized Signatory

                                 WESTON PRESIDIO CAPITAL IV, L.P.

                                 By: Weston Presidio Capital Management IV, LLC

                                          By:/s/  Mark L. Bono
                                             ---------------------
                                          Name:  Mark L. Bono
                                          Title:   Authorized Signatory

<PAGE>
                                                                              23

                                 WPC ENTREPRENEUR FUND, L.P.

                                 By: Weston Presidio Capital Management III, LLC

                                          By:/s/  Mark L. Bono
                                             ---------------------
                                          Name:  Mark L. Bono
                                          Title:   Authorized Signatory

                                 WPC ENTREPRENEUR FUND II, L.P.

                                 By: Weston Presidio Capital Management IV, LLC

                                          By:/s/  Mark L. Bono
                                             ---------------------
                                          Name:  Mark L. Bono
                                          Title:   Authorized Signatory

                                 NBC ACQUISITION CORP.

                                 By: /s/  Mark W. Oppegard
                                     -----------------------
                                     Name:  Mark W. Oppegard
                                     Title:  President/CEO

                    [Signature Page - Stockholders Agreement]

<PAGE>
                                                                              24

                                            MANAGEMENT STOCKHOLDERS:
                                            -----------------------

                                            /s/  Mark W. Oppegard
                                            ------------------------------------
                                            Mark W. Oppegard

                                            /s/  Larry R. Rempe
                                            ------------------------------------
                                            Larry R. Rempe

                                            /s/ Thomas A. Hoff
                                            ------------------------------------
                                            Thomas A. Hoff

                                            /s/  Kenneth F. Jirovsky
                                            ------------------------------------
                                            Kenneth F. Jirovsky

                                            /s/  William H. Allen
                                            ------------------------------------
                                            William H. Allen

                                            /s/  Ardean A. Arndt
                                            ------------------------------------
                                            Ardean A. Arndt

                                            /s/  Barry S. Major
                                            ------------------------------------
                                            Barry S. Major

                                            /s/  Alan G. Siemek
                                            ------------------------------------
                                            Alan G. Siemek

                                            /s/  Michael J. Kelly
                                            ------------------------------------
                                            Michael J. Kelly

                    [Signature Page - Stockholders Agreement]

<PAGE>
                                                                              25

                                            /s/  Robert A. Rupe
                                            ------------------------------------
                                            Robert A. Rupe

                    [Signature Page - Stockholders Agreement]Execution Copy

================================================================================
                                                                     EXHIBIT 4.2

                          REGISTRATION RIGHTS AGREEMENT

                                  by and among

                              HWH CAPITAL PARTNERS, L.P.,

                             HWH CORNHUSKER PARTNERS, L.P.

                          WESTON PRESIDIO CAPITAL III, L.P.,

                           WESTON PRESIDIO CAPITAL IV, L.P.,

                             WPC ENTREPRENEUR FUND, L.P.,

                            WPC ENTREPRENEUR FUND II, L.P.,

                                       and

                                 NBC ACQUISITION CORP.

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

                                  July 11, 2002
                          -----------------------------

================================================================================
<PAGE>
                                TABLE OF CONTENTS
                                -----------------

                                                                            Page
                                                                            ----

ARTICLE I GENERAL; SECURITIES SUBJECT TO THIS AGREEMENT........................1
        1.01   Grant of Rights.................................................1
        1.02   Registrable Securities..........................................1
        1.03   Holders of Registrable Securities...............................2

ARTICLE II DEMAND REGISTRATION.................................................2
        2.01   Request for Demand Registration.................................2
        2.02   Incidental or "Piggy-Back" Rights with Respect to a Demand
               Registration....................................................3
        2.03   Effective Demand Registration...................................3
        2.04   Expenses........................................................4
        2.05   Underwriting Procedures.........................................4
        2.06   Selection of Underwriters.......................................4

ARTICLE III INCIDENTAL OR "PIGGY-BACK" REGISTRATION............................5
        3.01   Request for Incidental Registration.............................5
        3.02   Expenses........................................................5

ARTICLE IV FORM S-3 REGISTRATION...............................................6
        4.01   Request for a Form S-3 Registration.............................6
        4.02   Form S-3 Underwriting Procedures................................6
        4.03   Limitations on Form S-3 Registrations...........................7
        4.04   Expenses........................................................7
        4.05   No Demand Registration..........................................7

ARTICLE V HOLDBACK AGREEMENTS..................................................7
        5.01   Restrictions on Public Sale by Designated Holders...............7
        5.02   Restrictions on Public Sale by the Company......................8

ARTICLE VI REGISTRATION PROCEDURES AND EXPENSES................................8
        6.01   Obligations of the Company......................................8
        6.02   Registration Expenses...........................................8

ARTICLE VII INDEMNIFICATION; CONTRIBUTION......................................9
        7.01   Indemnification by the Company..................................9
        7.02   Indemnification by Designated Holders...........................9
        7.03   Conduct of Indemnification Proceedings.........................10
        7.04   Contribution...................................................11

ARTICLE VIII RULE 144.........................................................12

ARTICLE IX Definitions........................................................12
        9.01   Certain Defined Terms..........................................12

                                       i
<PAGE>

        9.02   Other Defined Terms............................................14
        9.03   HWH/Buyers.....................................................15

ARTICLE X MISCELLANEOUS.......................................................15
        10.01  Effective Date.................................................15
        10.02  Notices........................................................15
        10.03  Successors and Assigns; Third Party Beneficiaries..............16
        10.04  Recapitalizations, Exchanges, etc. ............................17
        10.05  No Inconsistent Agreements.....................................17
        10.06  Further Assurances.............................................17
        10.07  No Third Party Beneficiaries...................................18
        10.08  Severability...................................................18
        10.09  Amendment and Waiver...........................................18
        10.10  Usage..........................................................18
        10.11  Articles and Sections..........................................18
        10.12  No Strict Construction.........................................18
        10.13  Governing Law..................................................18
        10.14  Consent to Jurisdiction and Service of Process.................18
        10.15  Waiver of Jury.................................................19
        10.16  Specific Performance...........................................19
        10.17  Complete Agreement.............................................19
        10.18  Counterparts...................................................19

Appendix A              Registration Procedures

                                       ii
<PAGE>

                          REGISTRATION RIGHTS AGREEMENT
                          -----------------------------

               THIS REGISTRATION RIGHTS AGREEMENT is made as of July 11, 2002
(this "Agreement"), by and among HWH Capital Partners, L.P., a Delaware limited
partnership ("HWH Capital"), HWH Cornhusker Partners, L.P., a Delaware limited
partnership ("HWH Cornhusker" and, together with HWH Capital, "HWH"), Weston
Presidio Capital III, L.P., a Delaware limited partnership ("Buyer 1"), Weston
Presidio Capital IV, L.P., a Delaware limited partnership ("Buyer 2"), WPC
Entrepreneur Fund, L.P., a Delaware limited partnership ("Buyer 3") and WPC
Entrepreneur Fund II, L.P., a Delaware limited partnership ("Buyer 4") and NBC
Acquisition Corp., a Delaware corporation (the "Company"). Buyer 1, Buyer 2,
Buyer 3 and Buyer 4 are collectively referred to herein as the "Buyers," and
each, a "Buyer". Unless otherwise provided herein, capitalized terms used herein
are defined in Article IX below.

                                R E C I T A L S:
                                - - - - - - - -

               A. Pursuant to a Stock Purchase Agreement, dated as of even date
herewith, among HWH, certain management stockholders and the Buyers (the "Stock
Purchase Agreement"), HWH and the management stockholders have agreed to sell to
the Buyers an aggregate of 416,912 shares of Class A Common Stock, par value
$0.01 per share, of the Company;

               B. The parties hereto desire to provide for, among other things,
the grant of registration rights with respect to the Registrable Securities, on
the terms and subject to the conditions set forth in this Agreement.

               NOW, THEREFORE, in consideration of the mutual covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

                                    ARTICLE I

                  GENERAL; SECURITIES SUBJECT TO THIS AGREEMENT

               1.01 GRANT OF RIGHTS. The Company hereby grants registration
rights to the Designated Holders upon the terms and conditions set forth in this
Agreement.

               1.02 REGISTRABLE SECURITIES. For the purposes of this Agreement,
Registrable Securities held by any Designated Holder will cease to be
Registrable Securities, when (i) a Registration Statement covering such
Registrable Securities has been declared effective under the Securities Act by
the Commission and such Registrable Securities have been disposed of pursuant to
such effective Registration Statement, (ii) (x) the entire amount of the
Registrable Securities held by any Designated Holder may be sold in a single

<PAGE>
                                                                              2

sale, in the opinion of counsel satisfactory to the Company and such Designated
Holder, each in their reasonable judgment, without any limitation as to volume
pursuant to Rule 144 (or any successor provision then in effect) under the
Securities Act and (y) such Designated Holder owns less than 1% of the
outstanding shares of Common Stock on a fully diluted basis, or (iii) the
Registrable Securities are proposed to be sold or distributed by a Person not
entitled to the registration rights granted by this Agreement.

               1.03 HOLDERS OF REGISTRABLE SECURITIES. A Person is deemed to be
a holder of Registrable Securities whenever such Person owns of record
Registrable Securities, or holds an option to purchase, or a security
convertible into or exercisable or exchangeable for, Registrable Securities
whether or not such acquisition or conversion has actually been effected. If the
Company receives conflicting instructions, notices or elections from two or more
Persons with respect to the same Registrable Securities, the Company may act
upon the basis of the instructions, notice or election received from the
registered owner of such Registrable Securities. Registrable Securities issuable
upon exercise of an option or upon conversion of another security shall be
deemed outstanding for the purposes of this Agreement.

                                   ARTICLE II

                               DEMAND REGISTRATION

               2.01 REQUEST FOR DEMAND REGISTRATION. Each of HWH Capital and HWH
Cornhusker may make a written request to the Company to register (the party
making such request, the "Initiating Holders"), and the Company shall register,
under the Securities Act (other than pursuant to a Registration Statement on
Form S-4 or S-8 or any successor thereto) (a "Demand Registration"), the number
of Registrable Securities stated in such request; provided, however, that the
Company shall not be obligated to effect (x) more than three such Demand
Registrations requested by HWH, it being understood that if HWH Capital and HWH
Cornhusker jointly make a request for a Demand Registration, such request shall
constitute one Demand Registration only, (y) a Demand Registration if the
Initiating Holders, together with the Designated Holders (other than the
Initiating Holders) which have requested to register securities in such
registration pursuant to Section 2.02, propose to sell their Registrable
Securities at an aggregate price (calculated based upon the Market Price of the
Registrable Securities on the date of filing of the Registration Statement with
respect to such Registrable Securities) to the public of less than $5,000,000,
and (z) any such Demand Registration commencing prior to 180 days after the IPO
Effectiveness Date. For purposes of the preceding sentence, two or more
Registration Statements filed in response to one demand shall be counted as one
Demand Registration. If the Board of Directors, in its good faith judgment,
determines that any registration of Registrable Securities should not be made or
continued because it would materially interfere with any material financing,
acquisition, corporate reorganization or merger or other material transaction
involving the Company (a "Valid Business Reason"), the Company may (x) postpone
filing a Registration Statement relating to a Demand Registration until such
Valid Business Reason no longer exists, but in no event for more than 45 days
and (y) in case a Registration Statement has been filed relating to a Demand
Registration, the Company, upon the approval of a majority of the Board of
Directors, may cause such Registration Statement to be withdrawn and its

<PAGE>
                                                                              3

effectiveness terminated or may postpone amending or supplementing such
Registration Statement (in which case, if the Valid Business Reason no longer
exists or if more 45 days have passed since such withdrawal or postponement, the
Initiating Holders may request a new Demand Registration). The Company shall
give written notice of its determination to postpone or withdraw a Registration
Statement and of the fact that the Valid Business Reason for such postponement
or withdrawal no longer exists, in each case, promptly after the occurrence
thereof. Notwithstanding anything to the contrary contained herein, the Company
may not postpone or withdraw a filing under this Section 2.01 more than once in
any 18 month period. Each request for a Demand Registration by the Initiating
Holders shall state the amount of the Registrable Securities proposed to be sold
and the intended method of disposition thereof.

               2.02 INCIDENTAL OR "PIGGY-BACK" RIGHTS WITH RESPECT TO A DEMAND
REGISTRATION. Each of the Designated Holders (other than Initiating Holders
which have requested a registration under Section 2.01) may offer its
Registrable Securities under any Demand Registration pursuant to this Article
II. Within five days after the receipt of a request for a Demand Registration
from an Initiating Holder, the Company shall (i) give written notice thereof to
all of the Designated Holders (other than Initiating Holders which have
requested a registration under Section 2.01) and (ii) subject to Section 2.05,
include in such registration all of the Registrable Securities held by such
Designated Holders from whom the Company has received a written request for
inclusion therein within 10 days of the receipt by such Designated Holders of
such written notice referred to in clause (i) above. Each such request by such
Designated Holder shall specify the number of Registrable Securities proposed to
be registered. The failure of any Designated Holder to respond within such
10-day period referred to in clause (ii) above shall be deemed to be a waiver of
such Designated Holder's rights under this Section 2.02 with respect to such
Demand Registration. Any Designated Holder may waive its rights under this
Section 2.02 prior to the expiration of such 10-day period by giving written
notice to the Company, with a copy to the Initiating Holders. If a Designated
Holder sends the Company a written request for inclusion of part or all of such
Designated Holder's Registrable Securities in a registration (whether pursuant
to Article II, III or IV), such Designated Holder shall not be entitled to
withdraw or revoke such request without the prior written consent of the Company
in its sole discretion, unless as a result of facts or circumstances arising
after the date on which such request was made relating to the Company or to
market conditions, such Designated Holder reasonably determines that
participation in such registration would have a material adverse effect on such
Designated Holder, provided that any Designated Holders shall be permitted to
withdraw or revoke such request in any circumstances, without requiring the
consent of the Company or any other party, if any of the Initiating Holders
shall have withdrawn any Registrable Securities from such registration.

               2.03 EFFECTIVE DEMAND REGISTRATION. The Company shall use its
commercially reasonable efforts to cause any such Demand Registration to become
and remain effective not later than 60 days after it receives a request under
Section 2.01 hereof. A registration shall not constitute a Demand Registration
until it has become effective and remains continuously effective for the lesser
of (i) the period during which all Registrable Securities registered in the
Demand Registration are sold or (ii) 120 days; provided, however, that a

<PAGE>
                                                                              4

registration shall not constitute a Demand Registration if (x) after such Demand
Registration has become effective, such registration or the related offer, sale
or distribution of Registrable Securities thereunder is interfered with by any
stop order, injunction or other order or requirement of the Commission or other
governmental agency or court for any reason not attributable to the Initiating
Holders and such interference is not thereafter eliminated or (y) the conditions
specified in the underwriting agreement, if any, entered into in connection with
such Demand Registration are not satisfied or waived, other than by reason of a
failure by the Initiating Holder.

               2.04 EXPENSES. The Company shall pay all Registration Expenses in
connection with a Demand Registration, whether or not such Demand Registration
becomes effective.

               2.05 UNDERWRITING PROCEDURES. If the Company or the Initiating
Holders so elect, the Company shall use its commercially reasonable efforts to
cause such Demand Registration to be in the form of a firm commitment
underwritten offering and the managing underwriter or underwriters selected for
such offering shall be the Approved Underwriter selected in accordance with
Section 2.06. In connection with any Demand Registration under this Article II
involving an underwritten offering, none of the Registrable Securities held by
any Designated Holder making a request for inclusion of such Registrable
Securities pursuant to Section 2.02 shall be included in such underwritten
offering unless such Designated Holder accepts the terms of the offering as
agreed upon by the Company, the Initiating Holders and the Approved Underwriter,
and then only in such quantity as set forth below. If the Approved Underwriter
advises the Company that the aggregate amount of such Registrable Securities
requested to be included in such offering is sufficiently large to have a
material adverse effect on the success of such offering, then the Company shall
include in such registration, to the extent of the amount that the Approved
Underwriter believes may be sold without causing such material adverse effect,
first, such number of Registrable Securities of the Initiating Holders and any
Designated Holder participating in the offering pursuant to Section 2.02, which
Registrable Securities shall be allocated PRO RATA among such Initiating Holders
and Designated Holders, based on the number of Registrable Securities requested
to be included in such offering by each such Initiating Holder and Designated
Holder, second, any other securities of the Company requested by holders thereof
to be included in such registration, which such securities shall be allocated
PRO RATA among such stockholders, based on the number of the Company's
securities requested to be included in such offering by each such stockholder,
and third, securities offered by the Company for its own account.

               2.06 SELECTION OF UNDERWRITERS. If any Demand Registration or S-3
Registration, as the case may be, of Registrable Securities is in the form of an
underwritten offering, the Company shall select and obtain an investment banking
firm of national reputation to act as the managing underwriter of the offering
(the "Approved Underwriter"); provided, however, that the Approved Underwriter,
in any case, shall also be approved by the Initiating Holders or S-3 Initiating
Holders, as the case may be, such approval not to be unreasonably withheld.

<PAGE>
                                                                              5

                                  ARTICLE III

                     INCIDENTAL OR "PIGGY-BACK" REGISTRATION

               3.01 REQUEST FOR INCIDENTAL REGISTRATION. At any time after the
IPO Effectiveness Date, if the Company proposes to file a Registration Statement
under the Securities Act with respect to an offering by the Company for its own
account (other than a Registration Statement on Form S-4 or S-8 or any successor
thereto) or for the account of any stockholder of the Company other than the
Designated Holders, then the Company shall give written notice of such proposed
filing to each of the Designated Holders at least 20 days before the anticipated
filing date, and such notice shall describe the proposed registration and
distribution and offer such Designated Holders the opportunity to register the
number of Registrable Securities as each such Designated Holder may request (an
"Incidental Registration"). The Company shall use its commercially reasonable
efforts (within 20 days of the notice provided for in the preceding sentence) to
cause the managing underwriter or underwriters in the case of a proposed
underwritten offering (the "Company Underwriter") to permit each of the
Designated Holders who have requested in writing to participate in the
Incidental Registration to include its Registrable Securities in such offering
on the same terms and conditions as the securities of the Company or the account
of such other stockholder, as the case may be, included therein. In connection
with any Incidental Registration under this Section 3.01 involving an
underwritten offering, the Company shall not be required to include any
Registrable Securities in such underwritten offering unless the Designated
Holders thereof accept the terms of the underwritten offering as agreed upon
between the Company, such other stockholders, if any, and the Company
Underwriter, and then only in such quantity as set forth below. If the Company
Underwriter determines that the registration of all or part of the securities
that have been requested to be included would materially adversely affect the
success of such offering, then the Company shall be required to include in such
Incidental Registration, to the extent of the amount that the Company
Underwriter believes may be sold without causing such material adverse effect,
first, all of the securities to be offered for the account of the Company,
second, any other securities of the Company requested by the Designated Holders
to be included in such offering, which such securities shall be allocated PRO
RATA among the Designated Holders participating in the offering, based on the
number of Registrable Securities requested to be included in such offering by
each such Designated Holder, and third, any other securities of the Company
requested by holders thereof to be included in such registration, which such
securities shall be allocated pro rata among such stockholders, based on the
number of the Company's securities requested to be included in such offering by
each such stockholder.

               3.02 EXPENSES. The Company shall bear all Registration Expenses
in connection with any Incidental Registration pursuant to this Article III,
whether or not such Incidental Registration becomes effective.

<PAGE>
                                                                              6
                                   ARTICLE IV

                              FORM S-3 REGISTRATION

               4.01 REQUEST FOR A FORM S-3 REGISTRATION. Upon the Company
becoming eligible for use of Form S-3 (or any successor form thereto) under the
Securities Act in connection with a public offering of its securities, if the
Company shall receive from HWH (acting jointly) or the Buyers (acting jointly)
(the "S-3 Initiating Holders"), a written request that the Company register,
under the Securities Act on Form S-3 (or any successor form then in effect) (an
"S-3 Registration"), all or a portion of the Registrable Securities owned by
such S-3 Initiating Holders, the Company shall give written notice of such
request to all of the Designated Holders (other than S-3 Initiating Holders
which have requested an S-3 Registration under this Section 4.01) at least 10
days before the anticipated filing date of such Form S-3, and such notice shall
describe the proposed registration and offer such Designated Holders the
opportunity to register the number of Registrable Securities as each such
Designated Holder may request in writing to the Company, given within 10 days
after their receipt from the Company of the written notice of such registration.
With respect to each S-3 Registration, the Company shall, subject to Section
4.02, (i) include in such offering the Registrable Securities of the S-3
Initiating Holders and the Designated Holders (who have requested in writing to
participate in such registration on the same terms and conditions as the
Registrable Securities of the S-3 Initiating Holders included therein) and (ii)
use its commercially reasonable efforts to cause such registration pursuant to
this Section 4.01 to become and remain effective as soon as practicable.

               4.02 FORM S-3 UNDERWRITING PROCEDURES. If the S-3 Initiating
Holders so elect, the Company shall use its commercially reasonable efforts to
cause such S-3 Registration pursuant to this Article IV to be in the form of a
firm commitment underwritten offering and the managing underwriter or
underwriters selected for such offering shall be the Approved Underwriter
selected in accordance with Section 2.06. In connection with any S-3
Registration under Section 4.01 involving an underwritten offering, the Company
shall not be required to include any Registrable Securities in such underwritten
offering unless the Designated Holders thereof accept the terms of the
underwritten offering as agreed upon between the Company, the Approved
Underwriter and the S-3 Initiating Holders, and then only in such quantity as
set forth below. If the Approved Underwriter believes that the registration of
all or part of the Registrable Securities which the S-3 Initiating Holders and
the other Designated Holders have requested to be included would materially
adversely affect the success of such public offering, then the Company shall be
required to include in the underwritten offering, to the extent of the amount
that the Approved Underwriter believes may be sold without causing such material
adverse effect, first, such number of Registrable Securities of the S-3
Initiating Holders and any Designated Holder participating in the offering
pursuant to Section 4.01, which such Registrable Securities shall be allocated
PRO RATA among such S-3 Initiating Holders and Designated Holders, based on the
number of Registrable Securities requested to be included in such offering by
each such S-3 Initiating Holder and Designated Holder, second, any other
securities of the Company requested by holders thereof to be included in such
registration, which such securities shall be allocated pro rata among such

<PAGE>
                                                                              7

stockholders, based on the number of the Company's securities requested to be
included in such offering by each such stockholder, and third, securities
offered by the Company for its own account.

               4.03 LIMITATIONS ON FORM S-3 REGISTRATIONS. If the Board of
Directors has a Valid Business Reason, the Company may (x) postpone filing a
Registration Statement relating to a S-3 Registration until such Valid Business
Reason no longer exists, but in no event for more than 45 days following the
request and (y) in case a Registration Statement has been filed relating to a
S-3 Registration, the Company, upon the approval of a majority of the Board of
Directors, may cause such Registration Statement to be withdrawn and its
effectiveness terminated or may postpone amending or supplementing such
Registration Statement (in which case, if the Valid Business Reason no longer
exists or if more than 45 days have passed since such withdrawal or
postponement, the S-3 Initiating Holder may request the prompt amendment or
supplement of such Registration Statement or a new S-3 Registration). The
Company shall give written notice of its determination to postpone or withdraw a
Registration Statement and of the fact that the Valid Business Reason for such
postponement or withdrawal no longer exists, in each case, promptly after the
occurrence thereof. Notwithstanding anything to the contrary contained herein,
the Company may not postpone or withdraw a filing, under either this Article IV
or Section 2.01, due to a Valid Business Reason more than once in any 18-month
period. In addition, the Company shall not be required to effect any
registration pursuant to Section 4.01, (i) within 90 days after the effective
date of any other Registration Statement of the Company (other than a
Registration Statement on Form S-4 or S-8 or any successor thereto), (ii) if
Form S-3 is not available for such offering by the S-3 Initiating Holders, or
(iii) if the S-3 Initiating Holders, together with the Designated Holders (other
than S-3 Initiating Holders which have requested an S-3 Registration under
Section 4.01) registering Registrable Securities in such registration, propose
to sell their Registrable Securities at an aggregate price (calculated based
upon the Market Price of the Registrable Securities on the date of filing of the
Form S-3 with respect to such Registrable Securities) to the public of less than
$5,000,000.

               4.04 EXPENSES. The Company shall bear all Registration Expenses
in connection with any S-3 Registration pursuant to this Article IV, whether or
not such S-3 Registration becomes effective.

               4.05 NO DEMAND REGISTRATION. No registration requested by any
Designated Holder pursuant to this Article IV shall be deemed a Demand
Registration pursuant to Article II.

                                   ARTICLE V

                               HOLDBACK AGREEMENTS

               5.01 RESTRICTIONS ON PUBLIC SALE BY DESIGNATED HOLDERS. If (i)
requested by the Approved Underwriter or the Company Underwriter, as the case
may be, in the case of an underwritten public offering, and (ii) all of the
Company's executive officers, directors and holders in excess of 1% of its

<PAGE>
                                                                              8

outstanding capital stock execute agreements identical to those referred to in
this Section 5.01, each Designated Holder (including the Initiating Holders or
the S-3 Initiating Holders, as the case may be) agrees (x) not to effect any
public sale or distribution of any Registrable Securities or of any securities
convertible into or exchangeable or exercisable for such Registrable Securities,
including a sale pursuant to Rule 144 under the Securities Act, or offer to
sell, contract to sell (including any short sale), grant any option to purchase
or enter into any hedging or similar transaction with the same economic effect
as a sale any Registrable Securities and (y) not to make any request for a
Demand Registration or S-3 Registration under this Agreement, during the period
beginning on the 15th day prior to the expected effective date (as determined by
the Company, which shall notify the Designated Holders of such date in writing)
of such Registration Statement and ending on the 90th day following the actual
effective date of such Registration Statement, or such shorter period, if any,
mutually agreed upon by such Designated Holder and the requesting party (except
as part of such registration). If any Designated Holder of Registrable
Securities subject to the foregoing restrictions, or director, executive officer
or other stockholder, is released from any obligation under any agreement,
arrangement or understanding described in this Section 5.01, to any extent, all
Designated Holders of Registrable Securities subject to the same obligation
shall be released from such obligation, to the same extent as such Designated
Holder, director, executive officer or other stockholder.

               5.02 RESTRICTIONS ON PUBLIC SALE BY THE COMPANY. The Company
agrees not to effect any public sale or distribution of any of its securities,
or any securities convertible into or exchangeable or exercisable for such
securities (except pursuant to registrations on Form S-4 or S-8 or any successor
thereto), during the period beginning on the 15th day prior to the expected
effective date (as determined by the Company) of any Registration Statement in
which the Designated Holders of Registrable Securities are participating and
ending on the earlier of (i) the date on which all Registrable Securities
registered on such Registration Statement are sold and (ii) 90 days after the
actual effective date of such Registration Statement (except as part of such
registration).

                                   ARTICLE VI

                      REGISTRATION PROCEDURES AND EXPENSES

               6.01 OBLIGATIONS OF THE COMPANY. Whenever registration of
Registrable Securities has been requested pursuant to Article II, III or IV, the
Company shall use its commercially reasonable efforts to effect the registration
and sale of such Registrable Securities in accordance with the terms of Appendix
A hereto.

               6.02 REGISTRATION EXPENSES. The Company shall pay all expenses
arising from or incident to its performance of, or compliance with, this
Agreement, including (i) Commission, stock exchange and NASD registration and
filing fees, (ii) all fees and expenses incurred in complying with securities or
"blue sky" laws (including reasonable fees, charges and disbursements of counsel
to any underwriter incurred in connection with "blue sky" qualifications of the
Registrable Securities as may be set forth in any underwriting agreement), (iii)
all printing, messenger and delivery expenses, and (iv) the fees, charges and

<PAGE>
                                                                              9

expenses of counsel to the Company and of its independent public accountants and
any other accounting fees, charges and expenses incurred by the Company
(including any expenses arising from any "cold comfort" letters or any special
audits incident to or required by any registration or qualification), and (v)
the fees and expenses of counsel to the Designated Holders, regardless of
whether such Registration Statement is declared effective. All of the expenses
described in the preceding sentence of this Section 6.02 are referred to herein
as "Registration Expenses." The Designated Holders of Registrable Securities
sold pursuant to a Registration Statement shall bear the expense of any broker's
commission or underwriter's discount or commission relating to the registration
and sale of such Designated Holders' Registrable Securities.

                                  ARTICLE VII

                          INDEMNIFICATION; CONTRIBUTION

               7.01 INDEMNIFICATION BY THE COMPANY. The Company agrees to
indemnify and hold harmless each Designated Holder, its partners, stockholders,
members, directors, officers, Affiliates, employees and each Person who controls
(within the meaning of Section 15 of the Securities Act) such Designated Holder
from and against any and all losses, claims, damages, liabilities and expenses
(including reasonable costs and expenses of legal counsel or otherwise arising
from any investigation, action or proceeding, whether commenced or threatened,
in respect to any of the foregoing) (each, a "Liability" and collectively,
"Liabilities"), arising out of or based upon any (i) untrue, or allegedly
untrue, statement of a material fact contained in any Registration Statement,
prospectus or preliminary prospectus or notification or offering circular (as
amended or supplemented if the Company shall have furnished any amendments or
supplements thereto), (ii) omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading under the circumstances such statements were made, except
insofar as such Liability arises out of or is based upon any untrue statement or
alleged untrue statement or omission or alleged omission contained in such
Registration Statement, preliminary prospectus or final prospectus in reliance
and in conformity with information concerning such Designated Holder furnished
in writing to the Company by such Designated Holder expressly for use therein,
including the information furnished to the Company pursuant to Section 7.02 or
(iii) any violation or alleged violation by the Company of the Securities Act,
the Exchange Act, any state securities law or any rule or regulation promulgated
under the Securities Act, the Exchange Act or any state securities law in
connection with the offering covered by such Registration Statement. The Company
shall also provide customary indemnities to any underwriters of the Registrable
Securities, their officers, directors and employees and each Person who controls
(within the meaning of Section 15 of the Securities Act) such underwriters to
the same extent as provided above with respect to the indemnification of the
Designated Holders of Registrable Securities.

               7.02 INDEMNIFICATION BY DESIGNATED HOLDERS. In connection with
any Registration Statement in which a Designated Holder is participating
pursuant to Article II, III or IV, each such Designated Holder shall promptly
furnish to the Company in writing such information with respect to such
Designated Holder as the Company may reasonably request or as may be required by

<PAGE>
                                                                              10

law for use in connection with any such Registration Statement or prospectus and
all information required to be disclosed in order to make the information
previously furnished to the Company by such Designated Holder not materially
misleading or necessary to cause such Registration Statement not to omit a
material fact with respect to such Designated Holder necessary in order to make
the statements therein not misleading. Each Designated Holder agrees severally
to indemnify and hold harmless the Company, the other Designated Holders who
participate in the Registration Statement, any underwriter retained by the
Company and each Person who controls (within the meaning of Section 15 of the
Securities Act) the Company, the other Designated Holders who participate in the
Registration Statement or such underwriter to the same extent as the foregoing
indemnity from the Company to the Designated Holders (including indemnification
of their respective partners, stockholders, members, directors, officers and
employees), but only to the extent that Liabilities arise out of or are based
upon a statement or alleged statement or an omission or alleged omission that
was made in reliance upon and in conformity with information with respect to
such Designated Holder furnished in writing to the Company by such Designated
Holder expressly for use in such Registration Statement or prospectus, including
the information furnished to the Company pursuant to this Section 7.02;
provided, however, that the total amount to be indemnified by such Designated
Holder pursuant to this Section 7.02 shall be limited to the net proceeds
received by such Designated Holder in the offering to which the Registration
Statement or prospectus relates.

               7.03 CONDUCT OF INDEMNIFICATION PROCEEDINGS. Any Person entitled
to indemnification or contribution hereunder (the "Indemnified Party") agrees to
give prompt written notice to the indemnifying party (the "Indemnifying Party")
after the receipt by the Indemnified Party of any written notice of the
commencement of any action, suit, proceeding or investigation or threat thereof
made in writing for which the Indemnified Party intends to claim indemnification
or contribution pursuant to this Agreement; provided, however, that the failure
so to notify the Indemnifying Party shall not relieve the Indemnifying Party of
any Liability that it may have to the Indemnified Party hereunder (except to the
extent that the Indemnifying Party is materially prejudiced or otherwise
forfeits substantive rights or defenses by reason of such failure). If notice of
commencement of any such action is given to the Indemnifying Party as provided
in the preceding sentence, the Indemnifying Party shall be entitled to
participate in and, to the extent it may wish, jointly with any other
Indemnifying Party similarly notified, to assume the defense of such action at
its own expense, with counsel chosen by it and reasonably satisfactory to such
Indemnified Party. Each Indemnified Party shall have the right to employ
separate counsel in any such action and participate in the defense thereof, but
the fees and expenses of such counsel shall be paid by the Indemnified Party
unless (i) the Indemnifying Party agrees to pay the same, (ii) the Indemnifying
Party fails to assume the defense of such action with counsel reasonably
satisfactory to the Indemnified Party or (iii) the named parties to any such
action (including any impleaded parties) include both the Indemnifying Party and
the Indemnified Party and such parties have been advised by such counsel that
either (x) representation of such Indemnified Party and the Indemnifying Party
by the same counsel would be inappropriate under applicable standards of
professional conduct or (y) there may be one or more legal defenses available to
the Indemnified Party which are different from or additional to those available

<PAGE>
                                                                              11

to the Indemnifying Party. In any of such cases, the Indemnifying Party shall
not have the right to assume the defense of such action on behalf of such
Indemnified Party, it being understood, however, that the Indemnifying Party
shall not be liable for the reasonable fees and expenses of more than one
separate firm of attorneys (in addition to any local counsel) for all
Indemnified Parties and all such expenses shall be reimbursed as incurred. No
Indemnifying Party shall be liable for any settlement entered into without its
written consent, which consent shall not be unreasonably withheld. No
Indemnifying Party shall, without the consent of such Indemnified Party, effect
any settlement of any pending or threatened proceeding in respect of which such
Indemnified Party is a party and indemnity has been sought hereunder by such
Indemnified Party, unless such settlement includes an unconditional release of
such Indemnified Party from all liability for claims that are the subject matter
of such proceeding. Notwithstanding the foregoing, if at any time an Indemnified
Party shall have requested the Indemnifying Party to reimburse the Indemnified
Party for fees and expenses of counsel as contemplated by this Article VII, the
Indemnifying Party agrees that it shall be liable for any settlement of any
proceeding effected without the Indemnifying Party's written consent if (i) such
settlement is entered into more than 30 business days after receipt by the
Indemnifying Party of the aforesaid request and (ii) the Indemnifying Party
shall not have reimbursed the Indemnified Party in accordance with such request
or contested the reasonableness of such fees and expenses prior to the date of
such settlement.

               7.04 CONTRIBUTION.

                    (a) If the indemnification provided for in this Article VII
from the Indemnifying Party is unavailable to an Indemnified Party hereunder or
insufficient to hold harmless an Indemnified Party in respect of any Liabilities
referred to herein, then each Indemnifying Party, in lieu of indemnifying such
Indemnified Party, shall contribute to the amount paid or payable by such
Indemnified Party as a result of such Liabilities in such proportion as is
appropriate to reflect the relative fault of the Indemnifying Party and
Indemnified Party in connection with the actions which resulted in such
Liabilities, as well as any other relevant equitable considerations. The
relative fault of such Indemnifying Party and Indemnified Party shall be
determined by reference to, among other things, whether any action in question,
including any untrue or alleged untrue statement of a material fact or omission
or alleged omission to state a material fact, has been made by, or relates to
information supplied by, such Indemnifying Party or Indemnified Party, and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such action. The amount paid or payable by a party as a
result of the Liabilities referred to above shall be deemed to include, subject
to the limitations set forth in Sections 7.01, 7.02 and 7.03, any legal or other
fees, charges or expenses reasonably incurred by such party in connection with
any investigation or proceeding; provided that the total amount to be
contributed by any Designated Holder shall be limited to the net proceeds
received by such Designated Holder in the offering. For the avoidance of doubt,
no Designated Holder shall be required to contribute under this Section unless
the Liabilities resulted from or arose out of the information furnished by such
Designated Holder to the Company pursuant to Section 7.02.

<PAGE>
                                                                              12

                    (b) The parties hereto agree that it would not be just and
equitable if contribution pursuant to this Section 7.04 were determined by PRO
RATA allocation or by any other method of allocation which does not take account
of the equitable considerations referred to in Section 7.04(a).

                    (c) No Person guilty of fraudulent misrepresentation (within
the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any Person who was not guilty of such fraudulent
misrepresentation.

                                  ARTICLE VIII

                                    RULE 144

                 The Company covenants that, from and after the IPO
Effectiveness Date, it shall (a) file any reports required to be filed by it
under the Exchange Act and (b) take such further action as each Designated
Holder may reasonably request (including providing any information necessary to
comply with Rule 144 under the Securities Act), all to the extent required from
time to time to enable such Designated Holder to sell Registrable Securities
without registration under the Securities Act within the limitation of the
exemptions provided by (i) Rule 144 under the Securities Act, as such rule may
be amended from time to time, or Regulation S under the Securities Act or (ii)
any similar rules or regulations hereafter adopted by the Commission. The
Company shall, upon the request of any Designated Holder, deliver to such
Designated Holder a written statement as to whether it has complied with such
requirements.

                                   ARTICLE IX

                                   DEFINITIONS

               9.01 CERTAIN DEFINED TERMS. As used in this Agreement, and unless
the context requires a different meaning, the following terms have the meanings
indicated:

               "AFFILIATE" means any Person who is an "affiliate" as defined in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

               "BOARD OF DIRECTORS" means the board of directors of the
Company.

               "CLOSING DATE" has the meaning set forth in the Stock Purchase
Agreement.

               "CLOSING PRICE" means, with respect to the Registrable
Securities, as of the date of determination, (a) if the Registrable Securities
are listed on a national securities exchange, the closing price per share of a
Registrable Security on such date published in The Wall Street Journal (National
Edition) or, if no such closing price on such date is published in The Wall
Street Journal (National Edition), the average of the closing bid and asked
prices on such date, as officially reported on the principal national securities
exchange on which the Registrable Securities are then listed or admitted to

<PAGE>
                                                                              13

trading; or (b) if the Registrable Securities are not then listed or admitted to
trading on any national securities exchange but are designated as national
market system securities by the NASD, the last trading price per share of a
Registrable Security on such date; or (c) if there shall have been no trading on
such date or if the Registrable Securities are not designated as national market
system securities by the NASD, the average of the reported closing bid and asked
prices of the Registrable Securities on such date as shown by The Nasdaq Stock
Market, Inc. (or its successor) and reported by any member firm of The New York
Stock Exchange, Inc. selected by the Company; or (d) if none of (a), (b) or (c)
is applicable, a market price per share determined in good faith by the Board of
Directors or, if such determination is not satisfactory to the Designated Holder
for whom such determination is being made, by a nationally recognized investment
banking firm selected by the Company and such Designated Holder, the expenses
for which shall be borne equally by the Company and such Designated Holder. If
trading is conducted on a continuous basis on any exchange, then the closing
price shall be at 4:00 P.M. New York City time.

               "COMMISSION" means the Securities and Exchange Commission or any
similar agency then having jurisdiction to enforce the Securities Act.

               "COMMON STOCK" means the Class A Common Stock, par value $0.01
per share, of the Company or any other capital stock of the Company into which
such stock is reclassified or reconstituted and any other common stock of the
Company.

                "DESIGNATED HOLDER" means each of HWH Capital, HWH Cornhusker
and the Buyers and any transferee of any of them to whom Registrable Securities
have been transferred in accordance with Section 10.03 of this Agreement, other
than a transferee to whom Registrable Securities have been transferred pursuant
to a Registration Statement under the Securities Act, Rule 144 or Regulation S
under the Securities Act (or any successor rule thereto).

               "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended, and the rules and regulations of the Commission thereunder.

               "INITIAL PUBLIC OFFERING" means the initial public offering of
the shares of Common Stock of the Company pursuant to an effective Registration
Statement filed under the Securities Act.

               "IPO EFFECTIVENESS DATE" means the date upon which the Company
consummates the Initial Public Offering.

               "MARKET PRICE" means, on any date of determination, the average
of the daily Closing Price of the Registrable Securities for the immediately
preceding 30 days on which the national securities exchanges are open for
trading; provided, however, that if the Closing Price is determined pursuant to
clause (d) of the definition of Closing Price, the "Market Price" means such
Closing Price on the date of determination.

               "NASD" means the National Association of Securities Dealers, Inc.

<PAGE>
                                                                              14

               "PERSON" means an individual, a partnership, a corporation, a
limited liability company, an association, a joint stock company, a trust, a
joint venture, an unincorporated organization and a governmental body.

               "REGISTRABLE SECURITIES" means each of the following: (a) any and
all shares of Common Stock now or hereafter owned by the Designated Holders or
issued or issuable upon conversion of any convertible securities or exercise of
any warrants or options held by any of the Designated Holders and (b) any shares
of Common Stock issued or issuable to any of the Designated Holders with respect
to the Registrable Securities by way of stock dividend or stock split or in
connection with a combination of shares, recapitalization, merger, consolidation
or other reorganization or otherwise and any shares of Common Stock or voting
common stock issuable upon conversion, exercise or exchange thereof.

               "REGISTRATION STATEMENT" means a Registration Statement filed
pursuant to the Securities Act.

               "SECURITIES ACT" means the Securities Act of 1933, as amended,
and the rules and regulations of the Commission promulgated thereunder.

               "STOCKHOLDERS AGREEMENT" means the Stockholders Agreement, dated
as of even date herewith, among HWH, certain management stockholders of the
Company, the Buyers and the Company.

               9.02 OTHER DEFINED TERMS. The following capitalized terms are
defined in the following Sections of this Agreement:

TERM                                                                   SECTION
Agreement.........................................................    Preamble
Approved Underwriter..............................................    2.06
Buyer 1...........................................................    Preamble
Buyer 2...........................................................    Preamble
Buyer 3...........................................................    Preamble
Buyer 4...........................................................    Preamble
Buyer(s)..........................................................    Preamble
Company...........................................................    Preamble
Company Underwriter...............................................    3.01
Demand Registration...............................................    2.01
Holders' Counsel..................................................    Appendix A
HWH...............................................................    Preamble
HWH Capital.......................................................    Preamble
HWH Cornhusker....................................................    Preamble
Incidental Registration...........................................    3.01
Indemnified Party.................................................    7.03
Indemnifying Party................................................    7.03
Inspector(s)......................................................    Appendix A
Liability.........................................................    7.01

<PAGE>
                                                                              15

TERM                                                                   SECTION
Liabilities.......................................................    7.01
Records...........................................................    Appendix A
Registration Expenses.............................................    6.02
S-3 Initiating Holders............................................    4.01
S-3 Registration..................................................    4.01
Stock Purchase Agreement..........................................    Recital A
Valid Business Reason.............................................    2.01

               9.03 HWH/BUYERS. Any action or decision to be made, or any right
exercisable by HWH under this Agreement, including any consent to be given
hereunder or any amendment of this Agreement, or any waiver of any provision of
this Agreement, shall be made by holders of a majority-in-interest of the
Registrable Securities owned by HWH and its permitted transferees under the
Stockholders Agreement and shall be binding on HWH and all such permitted
transferees. Any action or decision to be made, or any right exercisable by the
Buyers under this Agreement, including any consent to be given hereunder or any
amendment of this Agreement, or any waiver of any provision of this Agreement,
shall be made by holders of a majority-in-interest of the Registrable Securities
owned by he Buyers and their permitted transferees under the Stockholders
Agreement and shall be binding on the Buyers and all such permitted transferees.

                                    ARTICLE X

                                  MISCELLANEOUS

               10.01 EFFECTIVE DATE. This Agreement shall become effective on
the Closing Date.

               10.02 NOTICES. All notices, demands and other communications to
be given or delivered under or by reason of the provisions of this Agreement
shall be in writing and shall be delivered personally, sent by facsimile
transmission, sent by a nationally recognized courier service or by first class
mail, postage prepaid. Any such notice shall be deemed given when delivered
personally or if sent by facsimile, at the time of receipt of a legible copy
thereof or, if sent by nationally recognized courier service, two days after the
date of deposit with the courier service, or if by first class mail, three days
after the date of deposit in the mail, and shall be sent as follows:

                      (a)  if to the Buyers:

                             Weston Presidio Capital
                             200 Clarendon Street, 50th Floor
                             Boston, MA 02116
                             Attention:  Mark L. Bono
                             Facsimile No.:  (617) 988-2515
<PAGE>
                                                                              16

                                 with a copy to:

                             Weston Presidio Capital
                             Pier 1, Bay 2
                             San Francisco, CA 94111
                             Attention:  Therese A. Mrozek
                             Facsimile No.:  (415) 398-0990

                                 and

                             Bingham McCutchen LLP
                             150 Federal Street
                             Boston, MA 02110
                             Attention:  Johan V. Brigham
                             Fascimile No.:  (617) 951-8736

                      (b)  if to the Company or HWH:

                             HWH Capital Partners, L.P.
                             c/o Haas Wheat & Partners, L.P.
                             300 Crescent Court - Suite 1700
                             Dallas, TX  75201
                             Attention: Robert B. Haas,
                             Douglas D. Wheat, and Wyche Walton
                             Facsimile No.:  (214) 871-8364, and
                                             (214) 871-8357

                                 with a copy to:

                             Paul, Weiss, Rifkind, Wharton & Garrison
                             1285 Avenue of the Americas
                             New York, NY 10019-6064
                             Attention:  Robert M. Hirsh
                             Facsimile No.:  (212) 757-3990

Any party may by notice given in accordance with this Section 10.02 to the other
parties designate another address, facsimile number or Person for receipt of
notices hereunder.

               10.03 SUCCESSORS AND ASSIGNS; THIRD PARTY BENEFICIARIES. This
Agreement shall inure to the benefit of and be binding upon the successors and
permitted assigns of the parties hereto as hereinafter provided. The Demand
Registration rights, incidental or "piggy-back" registration rights and the S-3
Registration rights and the other rights of HWH hereunder may be (i) with
respect to any Registrable Security that is transferred to an Affiliate of HWH
(or any partner thereof), transferred to such Affiliate (or such partner) and
(ii) with respect to any Registrable Security that is transferred in all cases

<PAGE>
                                                                              17

to a non-Affiliate of HWH, transferred only if the transferee receives in one
transaction or a series of related transactions Registrable Securities
representing at least 5% of the Common Stock outstanding on the date of such
transaction (or the first transaction in a series of transactions). The
incidental or "piggy-back" registration rights of the Buyers contained in
Articles II, III and IV and the other rights of the Buyers hereunder may be (i)
with respect to any Registrable Security that is transferred to an Affiliate of
the Buyers (or if any such Buyer is a partnership, limited liability company or
corporation, to any partner, member or stockholder thereof), transferred to such
Affiliate (or such partner, member or stockholder) and (ii) with respect to any
Registrable Security that is transferred in all cases to a non-Affiliate of the
Buyers, transferred only if the transferee receives in one transaction or a
series of related transactions Registrable Securities representing at least 5%
of the Common Stock outstanding on the date of such transaction (or the first
transaction in a series of transactions). All of the obligations of the Company
hereunder shall survive any such transfer. The provisions of this Section 10.03
shall not affect or modify any transfer restrictions in the Stockholders
Agreement, which restrictions shall remain in full force and effect, unless such
restrictions are modified or terminated in accordance with the terms of the
Stockholders Agreement.

               10.04 RECAPITALIZATIONS, EXCHANGES, ETC. The provisions of this
Agreement shall apply to the full extent set forth herein with respect to (i)
the shares of Common Stock, (ii) any and all shares of voting common stock of
the Company into which the shares of Common Stock are converted, exchanged or
substituted in any recapitalization or other capital reorganization by the
Company, and (iii) any and all equity securities of the Company or any successor
or assigns of the Company (whether by merger, consolidation, sale of assets or
otherwise) which may be issued in respect of, in conversion of, in exchange for
or in substitution of, the shares of Common Stock and shall be appropriately
adjusted for any stock dividends, stock splits, reverse stock splits, stock
combinations, recapitalizations and the like occurring after the Closing Date.
The Company shall cause any successor or assigns (whether by merger,
consolidation, sale of assets or otherwise) to enter into a new registration
rights agreement with the Designated Holders on terms substantially the same as
this Agreement as a condition of any such transaction.

               10.05 NO INCONSISTENT AGREEMENTS. The Company hereby represents
and warrants that it has not previously entered into any agreement granting
registration rights to any Person with respect to any securities of the Company
except as set forth in this Agreement. The Company shall not enter into any
agreement with respect to its securities that is inconsistent with the rights
granted to the Designated Holders in this Agreement or grant any additional
registration rights to any Person or with respect to any securities that are not
Registrable Securities that provides for the priority or parity in registration
of such securities over the Registrable Securities held by the Designated
Holders or which rights are otherwise inconsistent with the rights granted in
this Agreement.

               10.06 FURTHER ASSURANCES. From time to time, as and when
requested by any party hereto and at such party's expense, any other party shall
execute and deliver, or cause to be executed and delivered, all such documents
and instruments and shall take, or cause to be taken, all such further or other

<PAGE>
                                                                              18

actions as such other party may reasonably deem necessary or desirable to
evidence and effectuate the transactions contemplated by this Agreement.

               10.07 NO THIRD PARTY BENEFICIARIES. Except as provided in Article
VII, no provision of this Agreement is intended to, or shall, confer any third
party beneficiary or other rights or remedies upon any Person other than the
parties hereto.

               10.08 SEVERABILITY. Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be prohibited
by or invalid under applicable law, such provision shall be ineffective only to
the extent of such prohibition or invalidity, without invalidating the remainder
of such provision or the remaining provisions of this Agreement.

               10.09 AMENDMENT AND WAIVER. Any provision of this Agreement may
be amended or waived only in writing signed by HWH, the Buyers and the Company.
No waiver of any provision hereunder or any breach or default hereof shall
extend to or affect in any way any other provision or prior or subsequent breach
or default. No delay on the part of any party in exercising any right, power or
privilege hereunder shall operate as a waiver thereof, nor shall any waiver on
the part of any party of any such right, power or privilege, nor any single or
partial exercise of any such right, power or privilege, preclude any further
exercise thereof or the exercise of any other such right, power or privilege.

               10.10 USAGE. All pronouns and any variations thereof refer to the
masculine, feminine or neuter, singular or plural, as the context may require.
All terms defined in this Agreement in their singular or plural forms have
correlative meanings when used herein in their plural or singular forms,
respectively. Unless otherwise expressly provided, the words "include,"
"includes" and "including" do not limit the preceding words or terms and shall
be deemed to be followed by the words "without limitation."

               10.11 ARTICLES AND SECTIONS. All references herein to Articles
and Sections shall be deemed references to such parts of this Agreement, unless
the context shall otherwise require. The Article and Section headings in this
Agreement are for reference only and shall not affect the interpretation of this
Agreement.

               10.12 NO STRICT CONSTRUCTION. The language used in this Agreement
shall be deemed to be the language chosen by the parties hereto to express their
mutual intent, and no rule of strict construction shall be applied against any
Person.

               10.13 GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York without regard to
principles of conflicts of law.

               10.14 CONSENT TO JURISDICTION AND SERVICE OF PROCESS. Any legal
action, suit or proceeding arising out of or relating to this Agreement or the
transactions contemplated hereby shall be instituted in any state or federal
court in the State of New York located in New York County and each party agrees

<PAGE>
                                                                              19

not to assert, by way of motion, as a defense or otherwise, in any such action,
suit or proceeding, any claim that it is not subject personally to the
jurisdiction of such court, that its property is exempt or immune from
attachment or execution, that the action, suit or proceeding is brought in an
inconvenient forum, that the venue of the action, suit or proceeding is improper
or that this Agreement, or the subject matter hereof may not be enforced in or
by such court. Each party further irrevocably submits to the exclusive
jurisdiction of any such court in any such action, suit or proceeding. Any and
all service of process and any other notice in any such action, suit or
proceeding shall be effective against any party if given by registered or
certified mail, return receipt requested, or by any other means of mail that
requires a signed receipt, postage prepaid, mailed to such party as herein
provided. Nothing contained herein shall be deemed to affect the right of any
party to serve process in any manner permitted by law.

               10.15 WAIVER OF JURY. EACH OF THE PARTIES HERETO HEREBY AGREES TO
WAIVE ITS RESPECTIVE RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION
BASED UPON OR ARISING OUT OF THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED
HEREBY. THE SCOPE OF THIS WAIVER IS INTENDED TO BE ALL-ENCOMPASSING OF ANY AND
ALL DISPUTES THAT MAY BE FILED IN ANY COURT AND THAT RELATE TO THE SUBJECT
MATTER OF THIS AGREEMENT, INCLUDING CONTRACT CLAIMS, TORT CLAIMS, BREACH OF DUTY
CLAIMS AND ALL OTHER COMMON LAW AND STATUTORY CLAIMS. EACH PARTY HERETO FURTHER
REPRESENTS AND WARRANTS THAT IT HAS REVIEWED THIS WAIVER WITH ITS LEGAL COUNSEL
AND THAT IT KNOWINGLY AND VOLUNTARILY WAIVES ITS JURY TRIAL RIGHTS FOLLOWING
CONSULTATION WITH LEGAL COUNSEL.

               10.16 SPECIFIC PERFORMANCE. The parties hereto intend that each
of the parties shall have the right to seek specific performance if any other
party hereto fails to perform such party's obligations hereunder.

               10.17 COMPLETE AGREEMENT. This Agreement contains the complete
agreement among the parties hereto and supersedes any prior understandings,
agreements or representations by or among the parties, written or oral, which
may have related to the subject matter hereof in any way.

               10.18 COUNTERPARTS. This Agreement may be executed in multiple
counterparts, any one of which need not contain the signatures of more than one
party, but all such counterparts taken together shall constitute one and the
same instrument.

                     [Remainder of Page Intentionally Left Blank]

<PAGE>
                                                                              20

               IN WITNESS WHEREOF, the parties hereto have executed this
Agreement as of the date first above written.

                              HWH CAPITAL PARTNERS, L.P.

                              By:  HWH, L.P., its general partner
                                   By:  HWH Incorporated, its general partner

                                               By:/s/  Douglas D. Wheat
                                                  ---------------------
                                                  Name:
                                                  Title:

                              HWH CORNHUSKER PARTNERS, L.P.

                              By:  HWH Cornhusker, L.P., its general partner
                                   By:  HWH Cornhusker Incorporated,
                                        its general partner

                                             By:/s/  Douglas D. Wheat
                                                ---------------------
                                                Name:
                                                Title:

                              WESTON PRESIDIO CAPITAL III, L.P.

                              By:  Weston Presidio Capital Management III, LLC

                                   By:/s/  Mark L. Bono
                                      ---------------------
                                      Name:  Mark L. Bono
                                      Title:  Authorized Signatory

                              WESTON PRESIDIO CAPITAL IV, L.P.

                              By:  Weston Presidio Capital Management IV, LLC

                                   By:/s/  Mark L. Bono
                                      ---------------------
                                      Name:  Mark L. Bono
                                      Title:  Authorized Signatory

<PAGE>
                                                                              21

                              WPC ENTREPRENEUR FUND, L.P.

                              By:  Weston Presidio Capital Management III, LLC

                                   By:/s/  Mark L. Bono
                                      ---------------------
                                      Name:  Mark L. Bono
                                      Title:  Authorized Signatory

                              WPC ENTREPRENEUR FUND II, L.P.

                              By:  Weston Presidio Capital Management IV, LLC

                                   By:/s/  Mark L. Bono
                                      ---------------------
                                      Name:  Mark L. Bono
                                      Title:  Authorized Signatory

                              NBC ACQUISITION CORP.

                              By:/s/  Mark W. Oppegard
                                 -----------------------
                                 Name:  Mark W. Oppegard
                                 Title:  President/CEO

                   [Signature Page - Registration Rights Agreement]

<PAGE>

                                   Appendix A

A.   Obligations of the Company. Whenever registration of Registrable Securities
     has been requested pursuant to Article II, III or IV, the Company shall use
     its commercially reasonable efforts to effect the registration and sale of
     such Registrable Securities in accordance with the intended method of
     distribution thereof as quickly as practicable, and in connection with any
     such request, the Company shall, as expeditiously as possible:

     1.   prepare and file with the Commission (as promptly as practicable, but
          in any event not later than 60 days after receipt of a request to file
          a Registration Statement with respect to Registrable Securities) a
          Registration Statement on any form for which the Company then
          qualifies or which counsel for the Company shall deem appropriate and
          which form shall be available for the sale of such Registrable
          Securities in accordance with the intended method of distribution
          thereof, and cause such Registration Statement to become effective;
          provided, however, that (x) before filing a Registration Statement or
          prospectus or any amendments or supplements thereto, the Company shall
          provide counsel selected by the Designated Holders holding a majority
          of the Registrable Securities being registered in such registration
          ("Holders' Counsel") and any other Inspector (as hereinafter defined)
          with an opportunity to review and comment on such Registration
          Statement and each prospectus included therein (and each amendment or
          supplement thereto) to be filed with the Commission, subject to such
          documents being under the Company's control, and (y) the Company shall
          notify the Holders' Counsel and each seller of Registrable Securities
          of any stop order issued or threatened by the Commission and take all
          reasonable actions required to prevent the entry of such stop order or
          to remove it if entered;

     2.   prepare and file with the Commission such amendments and supplements
          to such Registration Statement and the prospectus used in connection
          therewith as may be necessary to keep such Registration Statement
          effective for the lesser of (x) 120 days (except in the case of a
          registration filed pursuant to Rule 415 of the Securities Act or any
          successor rule or regulation) and (y) such shorter period which will
          terminate when all Registrable Securities covered by such Registration
          Statement have been sold, and comply with the provisions of the
          Securities Act with respect to the disposition of all securities
          covered by such Registration Statement during such period in
          accordance with the intended methods of disposition by the sellers
          thereof set forth in such Registration Statement;

     3.   furnish to each seller of Registrable Securities such number of copies
          of such Registration Statement, each amendment and supplement thereto
          (in each case including all exhibits thereto), and the prospectus
          included in such Registration Statement (including each preliminary
          prospectus) and any prospectus filed under Rule 424 under the
          Securities Act as each such seller may reasonably request in order to

<PAGE>

          facilitate the disposition of the Registrable Securities owned by such
          seller;

     4.   register or qualify such Registrable Securities under such other
          securities or "blue sky" laws of such jurisdictions as any seller of
          Registrable Securities may reasonably request, and to continue such
          qualification in effect in such jurisdiction for as long as
          permissible pursuant to the laws of such jurisdiction, or for as long
          as any such seller requests or until all of such Registrable
          Securities are sold, whichever is shortest, and do any and all other
          acts and things which may be reasonably necessary or advisable to
          enable any such seller to consummate the disposition in such
          jurisdictions of the Registrable Securities owned by such seller;
          provided, however, that the Company shall not be required to (x)
          qualify generally to do business in any jurisdiction where it would
          not otherwise be required to qualify but for this Section A.4, (y)
          subject itself to taxation in any such jurisdiction, or (z) consent to
          general service of process in any such jurisdiction;

     5.   notify each seller of Registrable Securities at any time when a
          prospectus relating thereto is required to be delivered under the
          Securities Act, upon discovery that, or upon the happening of any
          event as a result of which, the prospectus included in such
          Registration Statement contains an untrue statement of a material fact
          or omits to state any material fact required to be stated therein or
          necessary to make the statements therein, in light of the
          circumstances under which they were made, not misleading and the
          Company shall promptly prepare a supplement or amendment to such
          prospectus and furnish to each seller of Registrable Securities a
          reasonable number of copies of such supplement to or an amendment of
          such prospectus as may be necessary so that, after delivery to the
          purchasers of such Registrable Securities, such prospectus shall not
          contain an untrue statement of a material fact or omit to state any
          material fact required to be stated therein or necessary to make the
          statements therein, in light of the circumstances under which they
          were made, not misleading;

     6.   enter into and perform customary agreements (including an underwriting
          agreement in customary form with the Approved Underwriter or Company
          Underwriter, if any, selected as provided in Article II, III or IV, as
          the case may be) and take such other actions as are reasonably
          required in order to expedite or facilitate the disposition of such
          Registrable Securities, including causing its officers to participate
          in "road shows" and other information meetings organized by the
          Approved Underwriter or Company Underwriter;

     7.   make available at reasonable times for inspection by any seller of
          Registrable Securities, any managing underwriter participating in any
          disposition of such Registrable Securities pursuant to a Registration
          Statement, Holders' Counsel and any attorney or accountant retained by
          any such seller or any managing underwriter (each, an "Inspector" and
          collectively, the "Inspectors"), all financial and other records,
          pertinent corporate documents and properties of the Company and its
          subsidiaries (collectively, the "Records") as shall be reasonably

                                       2
<PAGE>

          necessary to enable them to exercise their due diligence
          responsibility, and cause the Company's and its subsidiaries'
          officers, directors and employees, and the independent public
          accountants of the Company, to supply all information reasonably
          requested by any such Inspector in connection with such Registration
          Statement. Records that the Company determines, in good faith, to be
          confidential and which it notifies the Inspectors are confidential
          shall not be disclosed by the Inspectors (and the Inspectors shall
          confirm their agreement in writing in advance to the Company if the
          Company shall so request) unless (x) the disclosure of such Records is
          necessary, in the Company's judgment, to avoid or correct a
          misstatement or omission in the Registration Statement, (y) the
          release of such Records is ordered pursuant to a subpoena or other
          order from a court of competent jurisdiction after exhaustion of all
          appeals therefrom, or (z) the information in such Records was known to
          the Inspectors on a non-confidential basis prior to its disclosure by
          the Company or has been made generally available to the public. Each
          seller of Registrable Securities agrees that it shall, upon learning
          that disclosure of such Records is sought in a court of competent
          jurisdiction, give notice to the Company and allow the Company, at the
          Company's expense, to undertake appropriate action to prevent
          disclosure of the Records deemed confidential;

     8.   if such sale is pursuant to an underwritten offering, obtain "cold
          comfort" letters dated the effective date of the Registration
          Statement and the date of the closing under the underwriting agreement
          from the Company's independent public accountants in customary form
          and covering such matters of the type customarily covered by "cold
          comfort" letters as the managing underwriter reasonably requests;

     9.   furnish, at the request of any seller of Registrable Securities on the
          date such securities are delivered to the underwriters for sale
          pursuant to such registration or, if such securities are not being
          sold through underwriters, on the date the Registration Statement with
          respect to such securities becomes effective, an opinion, dated such
          date, of counsel representing the Company for the purposes of such
          registration, addressed to the underwriters, if any, and to the seller
          making such request, covering such legal matters with respect to the
          registration in respect of which such opinion is being given as the
          underwriters, if any, and such seller may reasonably request and are
          customarily included in such opinions;

     10.  comply with all applicable rules and regulations of the Commission,
          and make available to its security holders, as soon as reasonably
          practicable but no later than 15 months after the effective date of
          the Registration Statement, an earnings statement covering a period of
          12 months beginning after the effective date of the Registration
          Statement, in a manner which satisfies the provisions of Section 11(a)
          of the Securities Act and Rule 158 thereunder;

     11.  cause all such Registrable Securities to be listed on each securities
          exchange on which similar securities issued by the Company are then
          listed, provided that the applicable listing requirements are
          satisfied;

                                       3
<PAGE>

     12.  cooperate with each seller of Registrable Securities and each
          underwriter participating in the disposition of such Registrable
          Securities and their respective counsel in connection with any filings
          required to be made with the NASD; and

     13.  take all other steps reasonably necessary to effect the registration
          of the Registrable Securities contemplated hereby and reasonably
          cooperate with the holders of such Registrable Securities to
          facilitate the disposition of such Registrable Securities pursuant
          thereto.

B.   Seller Information. The Company may require each seller of Registrable
     Securities as to which any registration is being effected to furnish, and
     such seller shall furnish, to the Company such information required to be
     included in such Registration Statement by applicable securities laws or
     otherwise necessary or desirable in connection with the disposition of such
     Registrable Securities as the Company may from time to time reasonably
     request in writing. If any seller of Registrable Securities fails to
     provide such information required to be included in such Registration
     Statement by applicable securities laws or otherwise necessary or desirable
     in connection with the disposition of such Registrable Securities in a
     timely manner after written request therefor, the Company may exclude such
     seller's Registrable Securities from a registration under Article II, III
     or IV.

C.   Notice to Discontinue. Each Designated Holder agrees that, upon receipt of
     any notice from the Company of the happening of any event of the kind
     described in Section A.5, such Designated Holder shall forthwith
     discontinue disposition of Registrable Securities pursuant to the
     Registration Statement covering such Registrable Securities until such
     Designated Holder's receipt of the copies of the supplemented or amended
     prospectus contemplated by Section A.5 and, if so directed by the Company,
     such Designated Holder shall deliver to the Company (at the Company's
     expense) all copies, other than permanent file copies then in such
     Designated Holder's possession, of the prospectus covering such Registrable
     Securities which is current at the time of receipt of such notice. If the
     Company shall give any such notice, the Company shall extend the period
     during which such Registration Statement shall be maintained effective
     pursuant to this Agreement (including the period referred to in Section
     A.2) by the number of days during the period from and including the date of
     the giving of such notice pursuant to Section A.5 to and including the date
     when sellers of such Registrable Securities under such Registration
     Statement shall have received the copies of the supplemented or amended
     prospectus contemplated by and meeting the requirements of Section A.5.

                                       4

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