h**p://download.nvidia.com/Windows/96.85/96.85_forceware_winvista_x86_international_whql.ex e
replace * with 't' without quotes.
and if u re operating any other OS, download it by selecting in this page,
http://www.nvidia.com/Download/index.aspx?lang=en-us
And about the motherboard, i can't find any info about it. can u give me any other information such as which chipset its made of.