Sorry, I thought the Osiris MX-350 and URC MX-350 were the same but it does look like they are slightly different. There is no Game System section in there. I did notice a Custom Installation Products section though, and it has 3 different Sony codes. You may want to try them (164, 165, 166) if you haven't already. If that doesn't work, and calling the help line doesn't turn out, then you will probably need to buy a PS2 controller to learn the codes from. You should be able to find them pretty cheap used off ebay or at your local game stores like Game Crazy, Game Stop, EB Games, etc.