If you use VICE and a Keyboard, its very simple: Just load your Game, and if you are prompted to insert Side 2, just Press "ALT+8" and select the Image of Side 2. If you control everything with your joystick, you have to map a joystick button to "ALT+8" You can remap Keyboard Keys (e.g. if you have a hacked Keyboard), and you can map joystick buttons to keys If you are registered, you can control the mouse with the joystick/directinal buttons too (you need this for disc swapping, if you dont have a mouse connected).