I hope someone can help me, I have tested with dvd decrypter to rip an original dvd (not a burnt copy) of pilates of my partner's to my hdd. First I did it as an ISO file for it and powerdvd XP (OEM version not retail) couldn't play it. I then tried it with having the file as an IFO format and powerdvd XP could read it and play it. I just don't understand why one works and yet the other won't. Can someone please instruct me as to how this can be remedied? Thanks guys.