I have a cheat device called Xploder for the PS2 (UK thing, dont think the US has it). I've had it for years and never had any problems with it. It can use Gamesark and codebreaker codes aswell as many others. My PS2 has the Messiah chip... actually I'm sure it was the Messiah 2 chip (had it done years ago). Its the Messiah that needs a double click of the reset button to load PS1 games and 2x double click to load PS2 games. I've recently began using DVD-r downloaded PS2 games on it. It runs fine, but it wont let me use the Xploder CD. I've tried it with 3 different DVD-r games and it doesn't work. I'm thinking its something to do with the way my PS2 loads DVD-R games... I tired using the Xploder CD with San Andreas, the game would come on, but the cheats wouldn't work. Then I downloaded Star Ocean 3 and tried it with that, now the game doesn't come on. Anyway, does anyone else have this problem? Anyone with a Messiah chip? If there is, have you found another cheat device that will work with the downloaded DVD-r games?