@Wisker no worries, I'd go through the link I posted and gather some information about your setup so people can help and do some research on how the system works (where roms go etc). Basically when you launch a game there should be a box that pops up where you can enter a menu and select what type of emulator you want to use for the rom, this is where you can use mame 2003, 2010, advmame, fbalpha etc for specific roms or all roms in that group (Arcade as example).