http://us.download.nvidia.com/Windows/270.61/270.61-desktop-winxp-32bit-english-whql.exe
http://us.download.nvidia.com/Windows/270.61/270.61-desktop-winxp-64bit-english-whql.exe
http://us.download.nvidia.com/Windows/270.61/270.61-desktop-win7-winvista-32bit-english-whql.exe
http://us.download.nvidia.com/Windows/270.61/270.61-desktop-win7-winvista-64bit-english-whql.exe