Playchoice on Mame32
 

aight, I know lots o people here have Mame32, and I gots a problem.

I d/led Super Mario Bros. 1, 2, and 3 from http://www.mame.dk.
(BTW, if you d/l these, the official title for them is "Playchoice: Super Mario Bros.")

When I try to play them, this green thing appears and it covers the top half of the screen. part of it says "select enter buttons" or something like that. I have pressed every button on the keyboard and nuttin works. has anyone else had the same problem? couldja help me out here?