Thanks guys - I was mistaking 1024x768 for 88x600...
And changing the bit depth down to 16 allowed 166x1200 as somoene 
tirelssly pointed out.
Maybe I'm rusty or my brain's atrophied - never used to take me a day 
to get this stuff sorted -  coudln't have done it without this list 
and tghe pateince of those who responded..
Sincerest thanks.
I'll crawl back under my stone now....
Martin
Martin Waller wrote:
duh!
My x freezes on start after I installed etch and I want to use 
xf86config to reconfigure it. What happened to that utlitlty?  I 
cannot work out what package its in.
Also, in the debian reference manual, at 
http://www.debian.org/doc/manuals/reference/ch-tune.en.html#s-xsrvr, 
it refers to xserver-common-v3 (I think I need this as I have an old 
matrox card)- I can find no such package in etch - is the ref manual 
out of date or something? Surely not?
Thanks for any help,
Martin