i dont think that ur insurance will still be active, but thats just what i think.
Your protection plan is not administered by Circuit City, it is a third party plan. Nothing to worry about, get your papers out and see the name, I think it was something like First protection?
i worked for circuit city and what you will have to do is call and get the number to the 3rd party company that handles the protection plans then they will be able to help you with your product