First of all, I've installed the latest nVidia drivers for my TNT2 -card. I know it's old card, but so is my machine Anyway, when I open the Display settings, and the Advanced tab in RH9, the "Enable 3d Hardware Accelaration" box is grayed out...why? I thought my card would be able to do 3d-accelarated graphics, because in Windows it did work somehow correctly (except those errors and crashes that are so normal everyday-problems in Windows) and did all the 3d-things well? So what exactly is this thing, and why can't I enable it? I've obeyed all the instructions given with the driver installation...

The card is a 32Mb nVidia Riva TNT2 card (agp)

Go into your XF86Config-4. Then add

In the Module section
Load "glx"

Erase the line or comment (#) out
Load "dri"
Load "GLcore"

In the Device section
Change Driver "nv" to
Driver "nvidia"


In your modules.conf file add:
alias /dev/nvidia* nvidia

The installer should add the line above automatically but if it doesn't, it doesn't hurt to check.

Reboot and you should see the o-famous NVidia logo screen.
Next login as su or root and run glxgears. If it runs, you have 3D rendering.

hmm...everything else is just like you wrote, (was before I wrote here) except the modules.conf line that is missing...even then the glxgears seems to run, but the box I mentioned is still grayed out..

so there is 3d-rendering enabled, altough the box tells different?

well, thanks anyway because of that glxgears you told about I now know it does work...

Not only must you edit your XF86Config file, but you have to download the driver from Nvidia! Check out their website. Their latest driver has a nice, fancy installer that works very smoothly. You still have to make those changes to XF86Config, but Nvidia's Readme explains everything perfectly fine.

yup, that was the forst thing I did I guess everything is in order, even if the box remains grayed out..programs seem to run with 3d on etc.