I downloaded Disc one of Final Fantasy VII(7) as an ISO to play on my CFW 5.00 M33-6 PSP, and when I extracted it I got 3 separate files:
FF7 CD1.ccd
FF7 CD1.sub
and
FF7 CD1.img

I put them all into a folder I called "Final Fantasy VII" and put it in the 'game' section of my memorystick, but when I go to where it should be on the memorystick all I get is "Corrupted data." Do I have to download both Discs 2 and 3 in order to get them to play correctly, or am I doing something wrong? Thanks in advanced.