wrong video driver

I accidentally installed the wrong video driver when I installed RedHat 7.2, I can't get gnome to start. How to I change the video drivers from the command line??

Thanks in advance.

red hat has too have the worst pre and post install configurability then any *nix I have played with.
Goodluck

xf86config
xvidtune

Bob,

Thanks for the reply. It was just my own stupid fault. I was installing it on an old Pentium 133 (that I heavily upgraded) and it was late at night (you know how it gets sometimes). For some reason I was thinking this box had my Voodoo3, when it actually was my other one. Anyway, thanks for the reply, I'll give it a shot when I get home tonight.

Thanks,

Derrick

or XConfigurator (might be a lowercase c). I really don't have issues with configuring X with redhat- I think it has fine tools if you know which ones to use.