press F8 at startup (around Loading windows.. time) and select Enable VGA mode
this will force it to 640x480
(GoldenFanjita whistle posse blow! horns crew i can't hear you!, Wed 16 Apr 2008, 23:51, archived)

Tried it
its the thing that causes the 640x480 mode that's disabled i believe
( StickFigureNinja is worried he may be on the list, Wed 16 Apr 2008, 23:54, archived)