When I try to change the resolution to 1680x1050 (a common resolution for widescreen monitors) using the 'SetResolution' command, I get the following:
SetResolution 1680 1050 16
Failed to set resolution 1600x1050x16
Restoring to previous resolution 640x480x16
Note that is says "1600" instead of 1680 for some reason.
Out of the two other 16:10 resolutions I tried, 1280x800 didn't work but 1440x900 did. All the 4:3 resolutions I tried worked fine.