I have a quick question, I have been using MAME and MAME32 for a year or so and have not seen this issue until yesterday.
I installed MAMe32 on a friends machine and whenever you attempt to launch a game they display sideways. I installed MAME32 and had the same result. I tried to edit some of the config stuff in MAME32 to no avail.
If anyone has seen this or has any advice let me know.