Jason,
One thing you can try. If you need a resolution that isn't listed, wait for the control to change the mode, and then use:
CDarkGDK.oDBDisplay.SetDisplayMode
Pass the respective resolution into the required parameters and see if this helps. As for supported modes, I can only go by what TGC have allowed within the DGDK binaries. There are other functions of the oDBDisplay class that allows you to probe your GPU for supported modes.
Paul.
[EDIT]
PS. Got your email. No problem. I'll try to sort out the problems for the next update. And thanks