andokai wrote:
The existing Gnome dialogs were complete crap, they just let me set my resolution lower. I mean why are they there if they don't work?

The GUI resolution tool is only a dialog and goes strictly by what has been made available in your config; it neither sets up nor rewrites your config for you. Other resolutions become available in either GNOME or KDE depending on what is written in your config, and the capabilities of your hardware.