The game refocuses the primary monitor to the desired resolution and typically blacks out the other screen. I have seen mamewah get resized onto the other monitor when a game is started, but the game does stay on the main monitor. I would like to keep the front end up on the second monitor or have the fe on the second monitor and switch to Johnny5 or cpviewer once the game is started. I know Howard mentioned that J5 can be set to work on the secondary monitor.