stupid, that really is a great explanation. But ski, im afraid there's a lot more than that to hacking, homebrew, etc. which very few people know about. i don't, so i can't help you. oh yeah, one thing i can tell you though.
An Iso Loader is a software application that was created by one, Humma Kuvala, which allows PSP's with 1.5 firmware to play free games off the memory stick.

WARNING: ISO Loaders such as UMD Emulator are illegal and could brick your PSP. Bricking is NOT covered in your warranty unless you have a damn good reason for it bricking.

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