Regedit. Go into localmachine/system/currentcontrolset/services/class/display/0000/modes/16 and right click on 16. The add a new KEY. Just type in 1216,912. Or any other workable rez. I think you have to add multiples of 8 or 16 for both x and y rez coordinates.
Also, the 16 means 16 bit color mode, if you run in 32 bit color, make sure you add a new key for the /modes/32 section.
Now, go inot the video cfg file in AH, and just manually type in the new video mode. They will not show up in the AH video settings config program, nor the WW2ol Settings.exe program.
fscott