Warranty

I believe you might be able to get a copy of the receipt if you payed with credit card. I know you can do this at Circuit City. If you purchased one of their protection plans. If you read the pamphlet that they give you when you purchase the plan, it states at the bottom that user must retain this certificate and receipt for proof of purchase. Thats how they make their money in the hopes you will lose your stuff and never use it. Thats why I like circuit city they keep that sort of thing on file. You can still give it a try as I would.
Here is the their number for questions regarding this 1-888-237-8289.
Good luck hope this was some help,
Lee