Noticed that machines with Voodoo3 cards do not get a 'Customize X' button
during graphical or text install, while Mach64 cards do.
Same situation with voodoo banshee cards.
This is to work around the fact that the voodoo cards would routinely corrupt
the display when tested. There is a known problem running 2 X servers
simultaneously with these cards with XFree 4.0. Hopefully these drivers will
stabilize over time.