from SC 13D
1 page
<page> Exhibit 1 Joint Filing Agreement This Will Confirm the Agreement by and Between the Undersigned That the Schedule 13d Filed on or About This Date and Any Amendments Thereto With Respect to Beneficial Ownership by the Undersigned of Shares of the Common Stock, $0.01 Par Value, of Ameristar Casinos, Inc. Is Being Filed on Behalf of Each of the Undersigned in Accordance With Rule 13d-1(k)(1) Under the Securities Exchange Act of 1934. This Agreement May Be Executed in Two or More Counterparts, Each of Which Shall Be Deemed an Original, but All of Which Together Shall Constitute One and the Same Instrument. Estate of Craig H. Neilsen December 15, 2006 By: /S/ Ray H. Neilsen Name: Ray H. Neilsen Title: Co-Personal Representative By: /S/ Gordon R. Kanofsky Name: Gordon R. Kanofsky Title: Co-Personal Representative By: /S/ Ray H. Neilsen Ray H. Neilsen, an Individual December 15, 2006 By: /S/ Gordon R. Kanofsky Gordon R. Kanofsky, an Individual December 15, 2006
