http://www.mundocorp.com/product.asp?specific=jmnppmhrq
I play with old Gateway lappies and I've bought CMOS batteries from here.
They're expensive, but you can look and then try to find one on Ebay.
Currently in my 9200 I am running the old CD-RW from my Gateway Solo 9550, so I know it works.
The bezel sits a little further in - about 1/16th inch. It does not effect performance, and the bezel is the correct size.