Video card driver update

I ran windows update and it said I should upgrade video card driver Nvidia
Corporation - Video - NVIDIA GeForce2 GTS. It downloaded fine and after it
installed it said failed error 80246002 so I tryed a couple more times same
thing happend. I know this driver should work because I download the driver
before, on my old hard drive before it died, I m thinking with the new
updater with sp2 might be affecting it right now I m running SP1 I m going to
updated to sp2 later today. is there anything I can do to install this
driver, because I have tryed playing games like counter strike and it only
lets me use software graphic settings and not open gl I also went to nvidas
site and download driver but as it was installing I got a windows message
saying driver has not been tested by windows not recommend to be installed it
may cause problems, what can I do to get the newest driver?

Thanks