IMPORTANT NOTICE REGARDING YOUR INVESTMENT

AllianceBernstein
   Investments

                      ACM GOVERNMENT OPPORTUNITY FUND, INC.

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                           1345 Avenue of the Americas
                               New York, NY 10105
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                                                               November 28, 2006

Dear Stockholder:

As you may know, the Board of Directors of ACM Government Opportunity Fund, Inc.
(the "Fund") has called a Special Meeting of Stockholders to be held on December
12, 2006. At this Special Meeting, stockholders will be asked to vote on the
approval of the acquisition of the assets and assumption of the liabilities of
the Fund by ACM Income Fund, Inc.

ACM Income Fund, Inc. is much larger and somewhat more diversified than the
Fund. The Board of Directors anticipates that the proposed acquisition will
result in benefits to the stockholders of the Fund as more fully described in
the prospectus/proxy statement previously mailed to you.

THE FUND'S RECORDS INDICATE THAT YOU HAVE YET TO VOTE ON THIS PROPOSAL. IF YOU
ARE NOT PLANNING TO ATTEND THE SPECIAL MEETING, PLEASE TAKE A MOMENT NOW TO CAST
YOUR VOTE SO THAT YOUR SHARES MAY BE REPRESENTED AT THE SPECIAL MEETING.

Another copy of your proxy ballot is enclosed for your convenience. Should you
have any questions regarding the proposal or to vote your shares, please call
1-800-331-5817.


To vote your shares, the following voting options have been set up for your
convenience.

     1.   Vote by Touch-tone Phone. Cast your vote by telephone by calling
          1-800-331-5817. Representatives are available from 9:00 a.m. to 10:00
          p.m. Monday to Friday and Saturday from 12:00 p.m. to 6:00 p.m.
          Eastern Time.

     2.   Vote Through the Internet. You may cast your vote using the Internet
          by logging into the Internet address located on the enclosed proxy
          ballot and following the instructions on the website.

     3.   Vote by Mail. You may cast your vote by signing, dating and mailing
          the enclosed proxy ballot(s) in the postage-prepaid return envelope
          provided.

Again, please do not hesitate to call toll-free 1-800-331-5817 if you have any
questions regarding this Special Meeting.

Thank you for your assistance with this important matter.

Sincerely,


Marc. O. Mayer
President