You need PS3tools, go to here to download the package and install it.This may seem to be difficult but it’s actually quite simple. But be noted, that not all games (very small number, for example Crash Twinsanity) can be played, and I don’t seek to know why. I have converted many PS2 games to pkg files to install on PS3, and I think it’s better this way as I don’t want to do what I wrote in my other post anymore, though you still need to follow the set-up process for PS2 games from there (you can consider this is is Part 2 for PS2 games).
