Where can i buy a dvd rom for a 2004 acura tsx?

I have a 2004 Acura TSX and my DVD-Rom has gone out. I cannot find the dvd rom alone for sale anywhere. Can anyone help me? I saw it on ebay a couple times but non have been posted reciently. Help me Im lost w/o my Navi!|||It will only be available from the dealer, a junkyard or ebay. It might be cheaper to buy an aftermarket one from a stereo shop.|||Have you checked with your local Acura dealer? You could possibly have a Warranty extension on that problem.