/etc/X11/XF86Config-4 already states
Section "Screen"
Identifier "DefaultScreen"
Device "Generic Video Card"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1400x1050" "1280x1024" "1024x768"
"800x600" "640x480"
EndSubSection
EndSection
nevertheless, the KDE-tool (Resize and Rotate -.5 using KDE 3.2.3)
offers me 1280x1024 as maximum.
Uli