I attempted to install FC4 in graphical mode and it gave me a vile white screen. I stood back in frusteration and realized the screen was moving (more of a flicker really).
So i attempted the installation in Text mode and it completed, but i tried to boot it and i got the white screen again.
If it is an help I have a Trident Blade3D vid card and a Gateway monitor.
I have 256 megs of memory and 27 gigs of disk space and a Intel Pentium 2 processor not sure of the speed though.