February 13, 2006 Mail Stop 4561 J. Michael Parks 17655 Waterview Parkway Dallas, TX 75252 Re: Alliance Data Systems Corporation Form 10-K for the year ended December 31, 2004 File No. 001-15749 Dear Mr. Parks: We have completed our review of your Form 10-K and do not, at this time, have any further comments. You may contact Yolanda Crittendon, Staff Accountant, at (202) 551-3472 or the undersigned at (202) 551-3498 if you have questions. Sincerely, Linda VanDoorn Senior Assistant Chief Accountant ?? ?? ?? ?? J. Michael Parks Alliance Data Systems Corporation January 5, 2006 Page 1