Alright, I got MS3 working =). I do right click, but what do I click after it? test files? that button is greyed out. Also, when I go into Metal Slug 4 & 5 it says that 'Bios [neogeo] needed. Although I do have the neogeo.zip in the roms folder, unless its talking about something else. Another thing, I checked in the zip file and it has 263-c1.bin for MS4, but it is still coming up as red, not green.