Cleandesperado made a tweaking utility for Quake Wars (demo & beta). You can download the utility on his homepage. If you don't know much about cvars... this can be very handy. If you don't know anything about cvars ... there are also some custom presets you can try.

1.3.06 info

Fixes: Custom aspect ratio can be changed
New Features:
Changes:some updated descriptions
Known issues:
1) Import Config file works not correctly with a few .cfg files
2) Preset loading can crash if the encrypted binding section contains the " mark