If depends on which Gforce2 card you have. The following cards are not supported..
GeForce2 GTS/GeForce2 Pro (0x0150)
GeForce2 Ti (0x0151)
GeForce2 Ultra (0x0152)
Quadro2 Pro (0x0153)
The Gforce2 cards below are supported in F12 using the 96xx drivers from RPM fusion.
GeForce2 MX/MX 400 (0x0110)
GeForce2 MX 100/200 (0x0111)
GeForce2 Go (0x0112)
The 96XX drivers have been updated to work with xorg1.8 (F13) but haven't made it into RPMfusion yet.
You can find out exactly which video card you have by booting up with a Fedora Live CD and entering the following command in the terminal.
You can check here to see which driver you need
for your card. The cards at the bottom which use the 71.86.xx drivers are no longer supported (afaik).