This board is terrific for getting help with my cabinet project.  Thanks a ton.  
My question this time is as follows: How do I quit a MAME game in order to return back to the Mamewah game selection list?  I am using an X-arcade dual controller, and I currently reach down through the coin door to access the "escape" key on my keyboard.  It's functional, but not ideal, I suppose.
One idea I have had is to figure out how to program the X-arcade to have a button be the escape key, or reprogram mame as such. (Not sure how to do either, not sure that I would like to do that.)
Anyway, I suspect this is a simple problem that has a simple answer.  Thanks.