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EXHIBIT 32 CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 I, Craig H. Neilsen, President and Chief Executive Officer of Ameristar
Casinos,
Inc. (the Company), certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my
knowledge: 1. the Annual Report on Form 10-K of the Company for the year ended December
31,
2003, as filed with the Securities and Exchange Commission (the Report),
fully
complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934; and 2. the information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company. Dated: March 12, 2004 /s/ Craig H. Neilsen by C. WilsonCraig H. NeilsenPresident and Chief Executive Officer of
Ameristar Casinos, Inc. On this 12th day of March 2004, Craig H. Neilsen directed Connie Wilson, in
his presence as well as our own, to sign the foregoing document as Craig H.
Neilsen. Upon viewing the signature as signed by Connie Wilson, and in our
presence, Craig H. Neilsen declared to us that he adopted it as his own
signature. /s/ Janet CatronWitness /s/ Lisa K. NowakWitness STATE OF NEVADA
 
COUNTY OF CLARK
    
    )
) :ss
)
 I, Margene M. Otten, Notary Public in and for said county and state, do
hereby certify that Craig H. Neilsen personally appeared before me and is known
or identified to me to be the person whose name is subscribed to the within
instrument in his capacity as President and Chief Executive Officer of
Ameristar
Casinos, Inc. Craig H. Neilsen, who being unable due to physical incapacity to
sign his own name or offer his mark, did direct Connie Wilson, in his presence,
as well as my own, to sign the foregoing document as Craig H. Neilsen. Craig
H. Neilsen, after viewing his name as signed by Connie Wilson, thereupon
adopted
it as his own by acknowledging to me his intention to so adopt it as if he had
personally executed the same, and further acknowledged to me that he executed
the same as the President and Chief Executive Officer of Ameristar Casinos, Inc. IN WITNESS WHEREOF, I have hereunto set my hand and official seal this
12th day of March 2004. /s/ Margene M. OttenNotary PublicResiding at:  Las Vegas My Commission Expires: July 23, 2006




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I, Thomas M. Steinbauer, Senior Vice President of Finance, Chief Financial
Officer and Treasurer of Ameristar Casinos, Inc. (the Company), certify,
pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that to my knowledge: 1. the Annual Report on Form 10-K of the Company for the year ended December
31,
2003, as filed with the Securities and Exchange Commission (the Report),
fully
complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934; and 2. the information contained in the Report fairly presents, in all material
respects, the financial condition and results of operations of the Company. Dated: March 12, 2004 /s/ Thomas M. SteinbauerThomas M. SteinbauerSenior Vice President of Finance,  Chief
Financial  Officer and Treasurer of Ameristar
Casinos, Inc. This certification accompanies the
Report pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002 and
shall not, except to the extent
required by the Sarbanes-Oxley Act
of 2002, be deemed filed by the
Company for purposes of Section 18
of the Securities Exchange Act of
1934, as amended.