hello i have a psp 1.5 firmware, i have put iso games on to my computer thru fastloader. Recently i have downloaded some games off torrent sites and they are all cso!?!?!?... Could some one give me the low down on what a cso file actually is and what (if any) new software i will be needing to make my games work please!!! I have been on about 7 different sites searching for the answers but every body just seems to be going off track with what they are saying! Could some body just put up simple easy step step guide on how to go about downloading and installing these kind of files and folders! ANY HELP WOULD BE MUCH APPRECIATED! nuff love to all my fellow psp users out the!