I just bought a *real inexpensive* ET4000 based  board.  after a bit of initial
messing about with Xconfig, X came up  fine in 640x484 mode.  "Great" I thought,
so now for better res... I ran CLOCK.EXE and it consistantly reports 4 values:

        25 28 33 and 36

hmmm.. where are the higher frequency clocks?  So I commented out the 
"clocks"  line in Xconfig and did a startx 2>startx.log ... X386 reports
sixteen clock values!

        25 28 33 36 40 45 32 38 51 57 66 73 80 90 63 76

I have a MAG14 monitor wich is not in the list but says it supports
non interlaced 1024x768.  There is a timeing entry in the stock config file
for this resolution at 62Mhz ...so I changed the 62 to a 63 and tried it,
It works.  There is more flicker than I am used to (I am used to TEXT modes)
so that is the next step...  If any one  has timeings for higher refresh
rates fot the Magic View 14 monitor, I would like to hear from them.

js