[newbie] Color Depth Problems

[Matt Stegman]

Hi, my name is Matt and I recently downloaded Mandrake Linux.  I
successfully installed it, but now am having problems configuring my
X-server.  It runs fine, but only in 8-bit color (my video card can support
32-bit).  I have run xconf a few times, and finally found how to change the
deafult resolution for each color depth, but I cannot seem to find any
utility to change color depth.  The KDE control panel does not have any
modules for this that I can find.  Can someone help me?
Thanks,
Matt Stegman