I have a Linksys WMP54G wireless PCI adapter for which Windows 7 (64 bit) did not install a driver. I tried using the latest driver from the Linksys website which was supposed to work in 64 bit Vista.

Linksys Wireless-G WRT54G. 4.0 Excellent. ... in addition to installing the card drivers for the WPC54G or WPC54GS, installs a version of Funk Software's Odyssey wireless supplicant ...