HELP!!!!!

Ok, so I have a psp and I want to put my emulators and ISO files on it now I read some other posts and followed directions and found that when I finaly got everything done the files were corrupt. So my question is what am I doing wron I also don't know what numbers my operating system is nor do I know how to find out. Help would be greatly appreciated.

EDIT-I found out I am running 3.03 if that helps at all.

you have to be more specific.

What kind of emulator to play what kind of games? Note that psp emulation is still in development so dont expect much. Be sure to search the forums for answers since you're find them much quicker than waiting for a reply.