The big one is.... Do you need to have your console chipped to play them? I was going to make a disk for my friend but not much point if it dosnt let him play it

Also.... what emulators are there that are worth getting for it just now? The only one I have at the moment is snes station, but I hear there is a MegaDrive one too? Anyone have any links to that, or other ones?

Thanks guys and gals.