Howto set odd screen resolution?

Hi list and gurus :-)

I'm on openSuSE11.2 with LIFE.
On a brand new client (a UNO box, works just fine), I've connected this
brand new widescreen LCD screen. Its resolution is something like 1680 x
900.

When I boot up the TC as a standard PC with, say, Ubuntu or something
similar, the screen is detected just fine.

When I PXE boot with LIFE, the screen geometry is not correctly deteced
and thus the screen ration is distorted.

Where can I read about fixing this, a howto perhaps?
Or - what can I do?

I have edited lts.conf - the settings have no effect - the screen
defaults back to 1280 x 1024.

As always, thanks a LOT!





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Med venlig hilsen
Verner Kjærsgaard