Sorry for the delay in getting back to you. I booted with "knoppix 2" and commented out all of the Modeline entries from the XF86Config-4 file. I then tried to open KDE using "/etc/init.d/xsession start", but I just got an error message saying "No suitable x-server found for your card."

So I rebooted using "fb1280x1024 screen=1280x1024 lang=us depth=32 xserver=XF86_SVGA vga=normal" and repeated the changes to the XF86Config-4 file. I also changed the default color depth to 32 (it was on 16). When I started KDE the resolution was still the same. I tried changing the screen resolution in the Control Panel, saved it, closed out of KDE, and then restarted it. Again, no change to the resolution. <Ctrl><Alt><+> didn't change anything either.

However when I reopened the XF86Config-4 file, I noticed that a new modeline with the correct resolution had been added --I assume KDE added it -- but the x-session doesn't seem to recognize it. So I still can only see about a 463x198 piece of a 1600x1200 desktop.

Thanks anyway for the suggestion.