Torgo said:
You monitor might not support 320 x 200, most new monitors don't. There is one more thing you can try editing in the config file.
scr_height "400"
scr_width "640"
If monitors want to be VGA compatible as all video cards are, then they must support 320x200 :P
The problem isn't the monitor, but the video drivers. Windows drivers normally don't allow resolutions under 640x480 because Microsoft decided Windows users wouldn't like that. While most hardware does support 320x200 and 640x400, drivers normally ignore them in purpose due to that.
My suggestion is to try 640x480 rather than 640x400. If that doesn't work, try your current resolution (some drivers are stupid enough to support only a single resolution... through those are very few).
Also, if I'm not wrong, when an application changes a resolution by going into fullscreen, it should work even if the user has minimum privileges. This is because the change is temporary and doesn't modify the registry. SRB2 uses temporary changes, yes, I checked that part of the source code.
Also, Donovan, if you have a dad as administrator of your own computer that only you use, most likely it's a dad that restricts your computer usage to a very limited time and even in that time it'll try to do whatever as possible to get you out of it :/ However it may be possible that there are two users, one administrator and one normal, and that the latter is logging on by default. I know this because this is the case here. Except I've set both to be administrators :P Try that too.