Basically I have my trackball set up as a mouse. Two of the buttons on my control panel are wired to it as mouse buttons. Now in MAME, under Default Game Options -> Controllers, there is the Enable Mouse Input check box. With that checked, if I launch a game from MAMEUI32, I can program and use the mouse buttons like any other joystick button. However, if I launch the same game under MA, even if the inputs have already been configured, the "mouse" buttons are not recognized within the games. Now the mouse buttons do work as mouse buttons on the game selection screen, it just does not work for inputs during game play but once again it does work when the game is launched via MAMEUI32. Is there a check box or something somewhere in the MA options that I am missing. Would be grateful for any insight. Thanks.