Vista not finding 8800gtx

Whenever I install vista (either x64 or x86) it cannot seem to identify my evga 8800gtx. This makes it so that I cannot install internet drivers as it believes that I do not have an appropriate device. I have also tried upgrading from within Windows XP Pro with the latest drivers installed but once again inside of vista it says I have an unidentified card and I cannot install drivers (I am using the correct drivers so that is not the problem). I also lost the original evga disc so I can't try using that (unless someone knows a site that I can download an image of it from, much like what creative offers for the x-fi). Help would be much appreciated since it works fine in XP but has problems in Vista an I know it should work with vista.

SPECS:
Asus A8R-MVP
EVGA 8800GTX
4800x2 @2.6ghz
Creative X-fi Xtreme Music
2 gb g. SKill ram
Silverstone 750watt power supple
1x500gb Hitachi Deskstar Sata II, 2x 250gb Diamond Max 10 UATA 133