I'll be going from Vista 64 to Windows 7 64. I figured it'd be easier to use something I already have and know it works. Newer still sells it for like $70. It came in my desktop I bought from HP roughly 3 years ago.
I can't find drivers for it on HP's site. The first review on NewEgg says "Installed it and windows 7 recognized right away. Did not have to install the drivers that came with the card.". You can always try it and see.