No you can´t but you can go to
this site and see most of the best emulators to play other systems games on
your psp. Just be warned that to do this you must be running a custom firmware and this is a very hard thing to do yourself and I don't know how to
do it ( a friend di it for me). By changing the firmware of your psp you might turn it into a quite expensive paperweight... So I don't recommend it
unless you are an expert on this subject!
