Nes for ps2 (http://psx-scene.com/forums/ps2-homebrew-dev-emu-scene/51658-fceultra-ps2-17.html)
I use a usb stick to play this emulator and all the games, There is a readme file with all the instructions on how to do this included. This emu has great compatibility and is still a WIP, so its only going to get better. Thanks to everyone     
who has contributed to making this great software.