well, first, fedora 8 reached end-of-life exactly 4 years ago today, so I'm curious as to why you want to run such outdated software. The open-source Nvidia drivers have improved *dramatically* over the last couple of years, so if you install something fresher you might just get full video support out of the box, without the proprietary driver.
Second, the newest proprietary driver that supports your card is version 71.86.15, which you can download here:
http://www.nvidia.com/object/linux-d...15-driver.html