Here is a list of supported cards for the latest nvidia drivers
Nvidia site
I use an Nvidia 7300GT pcie.
This card works out of the box for the following distros
Gentoo (with/without Compiz)
Sabayon (with/without Compiz)
Suse 10.3 (with/without Compiz)
Ubuntu 7.1(Compiz not tried)
Dyne-Bolic Black screen have not tried further.
Knoppix ok if used with with fb boot prompt
Hope this is of help.