Website for silent components. Although the site is a little stale, the forums are frequently updated
www.silentpcreview.com

An article from last year on passively cooled cards.
http://www.anandtech.com/video/showdoc.aspx?i=2825

This is the card that I recently purchased that is fanless; not the 8800 but currently probably as close as your going to get with no fan. There is an OC version but I've heard it has a high failure rate.

http://www.newegg.com/product/product.asp?item=N82E16814150189