I have win98SE and my ArcadeVGA can work in rotated mode. However, as you have mentioned, MAME32 won't run games, while your desktop is configured like that. Have you tried standard MAME? I would be a pity to have to use MAME instead or MAME32, but it would be great to have windows displayed vertically when you have your monitor or tv rotated. Also, who should we address this issue to? Andy or the MAME32 team?