Hi guys, I've got some problems about running "Birth by sleep" on psp emulator.
It's my first time with these stuff and I got stuck just after unzipping the game.

I'll describe now what I did step by step, so in case you can find my mistake:
1) Downloaded the emulator. It works.
2) Downloaded the file of the game. It was in RAR so I run the Rar program to expand it.
3) I was lost here, because there were so many files in a format I couldn't open, BUT I found another RAR, so I guessed that was to be expanded.
4) I expanded this file and found inside a ISO file and I tought "That's it, now I can run the game!"
5) Of course it was not. Life can't be so easy and happy. I got stuck here.

Other informations:
I'm a Mac user and the emulator for psp I took is jpcsp. I really AM stuck.

Please save me.
And I'm sorry for this silly request.