Video Argument for BootX

[michael sean edwards]

I am having some trouble with X Windows and my video card. Its a standard
ATI card that came with my 9500. Anyway what is the argument I need to tell
the system what my resolution and bit depth is? Thanks to anyone who can
help. 
I tried turning off the video driver in BootX but X windows died on me
anyway. With the driver working I get a mangled screen and a hang.
Sheesh, never the same thing twice.