gozar since you mentioned Atirra... I have a question: how on earth do you start a game? I'm hearing that it's the best emulator and I heard that F2 is the start button but I can't start a 5200 game to save my life! Rainbow is, like I said, the only one I can get to work at all, but the fact that it limits roms to a certain size. I also am having trouble with controls. The joystick wants to move whether I am touching it or not, such as in galaxian or xevious, it moves to the left or right without me touching the joysick and that ****es me off! The controller doesn't do that with other programs, so it's not the controller, but is that a digital/analog problem that can be fixed if I use an actual 5200 controller with a 5200 daptor?