I entered VGA compatible and then went onto Monitor setup, at which time I discover what chipset was on the video card so I wanted to go back and pick the specific card. No can do. Probing the monitor doesn't work either. Perhaps because it doesn't know how since I specified VGA. As a side note: I'm running a Trident 3DImage 9750 video chip.
Xconfigurator was heavily revamped for the 6.1 release and now allows changing and editing the properties of the video card.