Problem updating NVIDIA video driver

[unctarheels18]

I don't know much about computers but I've tried all I can to fix this and I can't come up with anything. Basically, I have a NVIDIA Geforce 2 video card for my PC. Recently, when trying to play some games, i've encountered video problems and was asked to update my drivers. So I thought, OK thats a pretty simple fix! So I went to the NVIDIA site and downloaded the correct driver and installed it and then was asked to restart my computer. I have windows XP and as soon as it got past the XP loading screen when the user names usually show up, my screen just goes black. So I have to reboot in safe mode and go back to my original video driver. THIS IS REALLY FRUSTRATING! I've been working on it for weeks and as I said before, I dont know much about computers so I thought I'd ask some more experienced people's opinions. Please Help, if you know how to fix this!
Thanks