First off you need to know which PS3 you're using, because if you're planning on playing them natively then you need an original 60GB or 20GB model. If you want to emulate them then you need to download an emulator too. Which is unfortunately where I can't help I'm afraid.
"NintenDON'T sue me please haha"
I read that ps3 canantively play ps2 games. Do you know how to save them to the ps3 hard drive?