Sorry no any clue on extended warrenty. Just google.
http://www.autosite.com/content/research/index.cfm?id=10714;ASITE&action=showArticle&aid=138624
"Dealerships must provide a copy of the extended warranty for you to read before you sign as well as a written explanation of your right to cancel the contract and get a full or partial refund."
You must read your extended warranty first.