Thanks for the response Kev. Im running 2.07k on an N-Go with a ps2 optical mouse. Just for reference, the mouse works with Xeno brigade and Next War. They run form the .nex extension in case that makes a diference from running from .bas.

Hi Kev - I get an error "J Invalid I/O device, 403:1" when I start the game using a PS2 mouse. Still a very good game with a joystick.