Setting the frame size to 800x600 on a system that doesnt support that high resolution might create problems.
So personally I check if the screen resolution is 640x480 or above and if true set the frame size to that (640x480). If the resolution is smaller then i choose fullscreen to at least get as close to my prefered size as possible.
Then again, the examiner probably has big hi-rez'd monitors so i dont think it will be much of a problem
\Aron