The roms you downloaded should be in .zip format. You do NOT extract the files. Instead, just transfer the .zip file right into the roms folder thats in the emulator's directory.
edit - If the mame roms you got did not download in the .zip format, i'd suggest downloading them from somewhere else. It'll make things much easier. Don't ask where on here. Just do a google search. But yeah... mame roms should be in .zip format and like I said, all you do is put those zip files into the "roms" directory.
This post has been edited by hyfall381: Jan 31 2012, 09:02 PM