Re-edited the whole thing, but with better punctuation. Want to play expensive games for free?Well, follow this tutorial and you can successfully play ISOs from your MS! Requirements: A PSP(for obvious reasons) Memory Stick USB cable/Memory Stick adapter Custom Firmware. Not a noob. Recommends: At least 2GB memory stick. A good internet connection. I will NOT tell you how to download games or get CFW. 1.Format your memory stick. 2.Connect your PSP to PC via USB/adapter. 3.You should have an ISO folder on the root of your MS. 4.Download your ISO.make sure you have a good connection as it can take some time.make sure it's a good dump. 5.Skip to step 6 if it says the game name then .cso/.iso .If it says .rar then extract it using Winrar. 6.Now you can convert your ISO to CSO or vice-versa using ciso convert.The difference?CSO takes less space from MS but will be a bit slower.ISO will take more space but will run more better. 7.OK, now all you need to do is place your CSO/ISO into the ISO folder located in the root of memory stick. 8.It may take some time so be patient. 9.When it's done, load your you ISO/CSO from your PSP. 10.Enjoy you game! if i've missed anything then tell me! Don't hesitate to ask me if you're stuck! This whole tutorial was made by me, kikzm33z.Whoever copies this is a cheap loser who can't make their own tutorial.