Once you have the nvidia drivers installed go into your /etc/X11/xorg.conf file. My file may differ slightly from yours as I don't run FC3 but the relevent sections should be there.
You need to have glx uncommented and dri commented like this.
# This loads the GLX module
Load "glx"
# This loads the DRI module
# Load "dri"
The # is a comment, meaning that line is not read or is skipped when the X server is started.
Also, if you have Load "GLcore" or something very similar make sure that is commented aswell.
Now, scroll down further and find this section, or something similar to it.
# Device configured by xorgconfig:
Section "Device"
Identifier "GFFX 5800nu"
Driver "nv"
#VideoRam 131072
# Insert Clocks lines here if appropriate
EndSection
In that section you need to make some changes so it looks like this.
# Device configured by xorgconfig:
Section "Device"
Identifier "GFFX 5800nu"
Driver "nvidia"
Option "NvAGP" "3"
#VideoRam 131072
# Insert Clocks lines here if appropriate
EndSection
Now, the Identifier line do not touch. You Linux OS should have filed that in or you put the name in while configging xorg. The main changes are the Driver "nv" to "nvidia". When you start your X server it should now load with the nvidia drivers instead of the dri drivers that don't have 3daccelleration.
The Option "NvAGP" "3" makes sure you have some sort of agp enabled for your vid card. This makes it so the vid card has access to the system memory incase it needs to read and write from it. In your bios you can set this size from 32 to 256 usually. Leave it at default of 64 and play your games. If you desire it you could try 128 to see if it helps any with performance. The "3" from that "NvAGP" line tells the X server to use the agp that the kernel has. If the kernel does not load an agp driver for your card then it will default to using the nvidia agp drivers. So basically the "3" is a catch all, it basically makes sure your agp interface has drivers loaded for you.
There may be some specific issues with FC3 and the nvidia drivers and such wich I didn't covor. All I did was give a straight out "what to change for the nvidia drivers" config for a standard install.
If you still have issues you can reply and i will see what I can do, or you can check here as they overall might be able to help better.
http://fedoraforum.org/forum/
Also, since i have seen some of your other posts, here is a list of games with guides for installing them incase you need it.
http://www.easylinuxguide.com/index....80ec243984fc4c
GL, HF