Help a Newbie Config XWindows

[Ed Sutherland <digital@twcny.rr.com>]

I am a newbie when it comes to Debian linux (installed a dual-boot 
system with Mac OS X), but I thought I knew a thing or two about 
XWindows, since I had XFree86 running on the Mac side. The Linux 
version is much more difficult to configure.

When debian boots, it says it cannot start XWindows, because it cannot 
find file "X" in /usr/X11R6/bin -- sure enough, it's not there. The 
XFree86 manual says my xstart script should point to XF86_SVGA, but 
there is no such critter on my system.

Two questions: what files need to be edited and where should they be 
located for the system to find them?

Thanks.

Ed