So, I downloaded a rom or two for use with gens x on my xbox. Now, when I unzipped them some were in .smd format, which is what I expected, but some where .bin. My question is do I... a. convert them to .smd format? or... b. need an emulator that will use .bin format? And, if I need to convert them, how? Or, if I need a different emulator, which?