DavidR
2
Nvidia Gforce have massive driver installation files forceware versions and they have drivers for a whole range of nvidia gforce video cards. If you use a tool called GPU-Z http://www.techpowerup.com/downloads/2252/techpowerup-gpu-z-v0-7-2/ and that lists your Driver Version.
See http://www.nvidia.com/Download/index.aspx?lang=en-us
In all honesty if you aren’t a gamer with a decent video card already (NOT) then I wouldn’t bother upgrading the driver unless you have a specific driver problem, I would leave well alone.