http://www.guru3d.com/ is a great site for information and the latest utilities and drivers.
http://www.sharkyextreme.com/ is another site for looking up information and drivers.
Wolfgir posted the offical nVidia site.
What you might need from the manufacture is an update for your motherboards drivers (maybe) or windows XP or what ever your OS is.
I know of another computer review site, but can't rember the link (doh! forgot to export old links to new computer). I'll see if I can't find it, something like Andatech.