Document:

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                                                                  Exhibit 10.9.2

                   FIRST AMENDMENT TO STOCK RIGHTS AGREEMENT

          This is the First Amendment to Stock Rights Agreement (the
"Amendment"), dated August 13, 1998, between BRADFORD M. BONO ("Shareholder"),
PAETEC CORP., a Delaware corporation with its principal place of business at 290
Woodcliff Drive, Fairport, New York 14450 (the "Company"), PAETEC
COMMUNICATIONS, INC., a Delaware corporation and wholly-owned subsidiary of the
Company with its principal place of business at 290 Woodcliff Drive, Fairport,
New York 14450 ("Subsidiary"), and ARUNAS A. CHESONIS ("Founder").

                                   RECITALS

          A.  Shareholder holds 500,000 shares of Class A common stock of the
Company, subject to certain restrictions contained in a Stock Rights Agreement,
dated July 17, 1998, among the parties (the "Agreement").

          B.  The Company has now offered to issue to Shareholder 30,000 shares
of Class B common stock at a purchase price of $.833 per share, subject to
certain restrictions.

          C.  The Company, Subsidiary, Shareholder, and Founder enter into this
Amendment for the purpose of confirming Shareholder's equity interest in the
Class B common stock of the Company and outlining the rights of Shareholder and
the restrictions imposed by the Company with respect to the Class B common stock
to be held by Shareholder.

                                     TERMS

          NOW, THEREFORE, in consideration of the following mutual promises, the
parties agree as follows:

          1.  Issuance of Shares.  The Company confirms its offer to issue
              ------------------
30,000 shares of Class B common stock (the "Class B Shares") to Shareholder at a
price of $.833 per share, payable in full upon issuance of the Class B Shares.
A stock certificate evidencing the Class B Shares shall be issued in the name of
Shareholder upon receipt of this executed Amendment and payment in full of the
purchase price.

          2.  Incorporation of Agreement by Reference.  All of the provisions of
              ---------------------------------------
the Agreement that apply to the Recapture Shares (as defined in the Agreement)
shall apply to the Class B Shares issued to Shareholder pursuant to this
Amendment, except to the extent that a provision of this Amendment expressly
supersedes any provision of the Agreement.  Additionally, to the extent that any
provision of this Amendment contradicts any provision contained in the Agreement
with respect to the Recapture Shares or Excluded Shares (as defined in the
Agreement), the provision of this Amendment shall control.
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          3.  Repurchase Price.  The Purchase Option of the Company, described
              ----------------
in Section 3 of the Agreement, shall apply to the Class B Shares.  In the event
that the Company exercises its Purchase Option with respect to all or a portion
of the Class B Shares, however, the price for all Class B Shares repurchased by
the Company pursuant to the Purchase Option, described in Section 4 of the
Agreement, shall be the fair market value of the Class B Shares  as of the date
of the exercise of the Purchase Option by the Company.  "Fair market value"
shall be determined by the accounting firm then retained by the Company, which
shall promptly perform an appraisal.  The determination shall be made in
accordance with generally accepted accounting principles and shall be binding on
all parties.

          4.  Stockholders' Agreement and Proxy.  Concurrently with the
              ---------------------------------
execution of this Amendment and the issuance of the Class B Shares, Shareholder
is executing and delivering a Stockholders' Agreement and proxy appointing
Arunas A. Chesonis Shareholder's attorney-in-fact and proxy to vote all Class B
Shares now or hereafter owned by Shareholder at any meeting of shareholders,
regular or special, whenever called, and for whatever purpose.  Copies of the
Stockholders' Agreement and proxy shall be filed with the Secretary of the
Company, and the proxy shall be registered in the stock books of the Company.
Any transfer of the Class B Shares is subject to the terms of the Stockholders'
Agreement and proxy.

          5.  Permitted Transfer of Recapture Shares and Class B Shares.  The
              ---------------------------------------------------------
restrictions on transfer of Shareholder's Recapture Shares (as defined in the
Agreement), set forth in Section 2 of the Agreement, shall apply equally to the
Class B Shares; provided, however, that those restrictions are modified, with
respect to both the Recapture Shares and Class B Shares, to permit Shareholder
to sell, assign, or transfer any or all of the Recapture Shares or Class B
Shares held by Shareholder to the following:

              (a) Shareholder's spouse, parent(s), siblings, or natural or
adopted lineal descendants, or the spouses of Shareholder's parent(s), siblings,
or lineal descendants (collectively, together with the Shareholder, referred to
as "Shareholder's Family Members");

              (b) the trustee of a trust (including a voting trust) principally
for the benefit of Shareholder and/or one or more of Shareholder's Family
Members; provided that the trust may also grant a general or special power of
appointment to one or more of Shareholder's Family Members and may permit trust
assets to be used to pay taxes, legacies, and other obligations of the trust or
of the estates of one or more of Shareholder's Family Members payable by reason
of the death of any of Shareholder's Family Members; and

              (c) a corporation, partnership, or limited liability company, a
majority of the voting equity interest in which is owned by Shareholder or by
one or more of Shareholder's transferees under subparagraphs (a) or (b) of this
Section.

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          6.  Legends.  Each certificate for Class B Shares owned by Shareholder
              -------
shall bear the following legends:

              (a) The shares represented by this certificate were issued to
     the shareholder with restrictions. Neither the shares, nor any
     interest in them, may be sold, transferred, assigned, pledged,
     hypothecated, or otherwise disposed of, unless that transfer is
     expressly permitted by a stock rights agreement, including any
     amendment thereto, between the shareholder and the Company, a copy of
     which is on file at the office of the Company in Fairport, New York.

              (b) The shares represented by this certificate have not been
     registered under the Securities Act of 1933, as amended, and may not
     be transferred in the absence of such registration unless the Company
     receives an opinion of counsel reasonably acceptable to it stating the
     such sale or transfer is exempt from registration.

              (c) The shares represented by this certificate are subject to
     a Stockholders' Agreement and to a proxy in favor of Arunas A.
     Chesonis, a copy of which is on file with the Company. Any transferee
     of the shares represented by this certificate shall take the shares
     subject to the terms of the Stockholders' Agreement and proxy.

With respect to Class B Shares that are subject to the Company's Purchase
Option, described in Section 3 of the Agreement, however, Shareholder shall be
entitled to a certificate without the legend set forth in subparagraph (a),
evidencing any Class B Shares as to which the Purchase Option has expired.

          7.  Modification of Recital B. of Agreement.  Recital B. of the
              ---------------------------------------
Agreement is modified to read as follows:

                  B. Shareholder is also one of the founding Shareholders
     of the Company and is an employee of the Subsidiary. In order to
     induce Shareholder to leave his former employer and join the
     Subsidiary as an employee, the Company previously offered to issue to
     Shareholder 250,000 shares of Class A common stock and 250,000 shares
     of Class B common stock. After negotiation, the Company offered to
     issue to Shareholder 500,000 shares of Class A common stock at a
     purchase price of $.40 per share, subject to certain restrictions.

                                       3
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          The parties' assent to the terms of this Amendment is confirmed by
their signatures below.

                                   PAETEC CORP.

                                   By: /s/ Arunas A. Chesonis
                                      ----------------------------------
                                       Title: President

                                   PAETEC COMMUNICATIONS, INC.

                                   By: /s/ Arunas A. Chesonis
                                      ----------------------------------
                                       Title: President

Address:                           /s/ Bradford M. Bono
                                   -------------------------------------
                                       Bradford M. Bono

5 Bromley Court
Voorhees, New Jersey 08043

Address:                           /s/ Arunas A. Chesonis
                                   -------------------------------------
                                       Arunas A. Chesonis

18 Buckthorn Run
Victor, New York 14564

                                       4<PAGE>

                                                                  Exhibit 10.9.3

                  SECOND AMENDMENT TO STOCK RIGHTS AGREEMENT

          This is the Second Amendment to Stock Rights Agreement (the
"Amendment"), dated September 30, 1998, between BRADFORD M. BONO
("Shareholder"), PAETEC CORP., a Delaware corporation with its principal place
of business at 290 Woodcliff Drive, Fairport, New York 14450 (the "Company"),
PAETEC COMMUNICATIONS, INC., a Delaware corporation and wholly-owned subsidiary
of the Company with its principal place of business at 290 Woodcliff Drive,
Fairport, New York 14450 ("Subsidiary"), and ARUNAS A. CHESONIS ("Founder").

                                    RECITALS

          A.  Shareholder holds 500,000 shares of Class A common stock of the
Company, subject to certain restrictions contained in a Stock Rights Agreement,
dated July 17, 1998, among the parties (the "Agreement").  Shareholder also
holds 30,000 shares of Class B common stock of the Company, subject to certain
restrictions contained in the Agreement and in the First Amendment to Stock
Rights Agreement dated August 13, 1998 (the "First Amendment").

          B.  The Company has now offered to issue to Shareholder 30,000
additional shares of Class A common stock at a purchase price of $2.50 per
share, subject to certain restrictions.

          C.  The Company, Subsidiary, Shareholder, and Founder enter into this
Amendment for the purpose of confirming Shareholder's additional equity interest
in the Class A common stock of the Company and outlining the rights of
Shareholder and the restrictions imposed by the Company with respect to the
additional Class A common stock to be held by Shareholder.

                                     TERMS

          NOW, THEREFORE, in consideration of the following mutual promises, the
parties agree as follows:

          1.  Issuance of Shares.  The Company confirms its offer to issue
              ------------------
30,000 shares of Class A common stock (the "Additional Class A Shares") to
Shareholder at a price of $2.50 per share, payable in full upon issuance of the
Additional Class A Shares.  A stock certificate evidencing the Additional Class
A Shares shall be issued in the name of Shareholder upon receipt of this
executed Amendment and payment in full of the purchase price.

          2.  Incorporation of Agreement and First Amendment by Reference.  All
              -----------------------------------------------------------
of the provisions of the Agreement shall apply to the Additional Class A Shares
issued to
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Shareholder pursuant to this Amendment, except to the extent that a provision of
this Amendment expressly supersedes any provision of the Agreement or First
Amendment. Sections 3 and 5 of the First Amendment, which modify Sections 4 and
2, respectively, of the Agreement, shall also apply to the Additional Class A
Shares.

          3.  Legends.  Each certificate for Additional Class A Shares owned by
              -------
Shareholder shall bear the following legends:

              (a) The shares represented by this certificate were issued to the
          shareholder with restrictions. Neither the shares, nor any interest in
          them, may be sold, transferred, assigned, pledged, hypothecated, or
          otherwise disposed of, unless that transfer is expressly permitted by
          a stock rights agreement, including any amendment thereto, between the
          shareholder and the Company, a copy of which is on file at the office
          of the Company in Fairport, New York.

              (b) The shares represented by this certificate have not been
          registered under the Securities Act of 1933, as amended, and may not
          be transferred in the absence of such registration unless the Company
          receives an opinion of counsel reasonably acceptable to it stating the
          such sale or transfer is exempt from registration.

With respect to Additional Class A Shares that are subject to the Company's
Purchase Option, described in Section 3 of the Agreement, however, Shareholder
shall be entitled to a certificate without the legend set forth in subparagraph
(a), evidencing any Additional Class A Shares as to which the Purchase Option
has expired.

          The parties' assent to the terms of this Amendment is confirmed by
their signatures below.

                                    PAETEC CORP.

                                    By: /s/ Arunas A. Chesonis
                                       ----------------------------------
                                          Title: President

                                       2
<PAGE>

                                    PAETEC COMMUNICATIONS, INC.

                                    By: /s/ Arunas A. Chesonis
                                       ---------------------------------
                                          Title: President

Address:                            /s/ Bradford M. Bono
                                    ------------------------------------
                                        Bradford M. Bono
5 Bromley Court
Voorhees, New Jersey  08043

Address:                            /s/ Arunas A. Chesonis
                                    ------------------------------------
                                        Arunas A. Chesonis
18 Buckthorn Run
Victor, New York  14564

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