I was thinking of buying a Slim PSP-3000 soon. I would like to make it so I can play PSP ISO's on it and emulators of other systems too. I really have no idea where to begin though. Is there anything special I need to buy or just the PSP itself? *An SD card or anything?* What all would I need to download and install (on my PC and/or on the PSP)? Also, it's not possible to do any of this on a PS Vita, right?