Hi Trig, I was talking to BP regarding mouse/trackball support in CoinOps R4 over at xbox-scene. He said you were the expert in this regard and told me to come here and talk to you. As I said, I've been trying out trackball support, but without much luck. I have an X-Arcade trackball, as well as an optical mouse and I'm connecting them to the Xbox via a USB to Xbox cable. I've tried each in ports 1 &2 and then later in ports 3 & 4, per BP instructions. Unfortunately, the emulator doesn't seem to recognize either device in any port. The one thing I did notice is that when I had the optical mouse plugged in and the game was loading, the mouse glowed red, but then, once the game loaded, it blinked a few times, and then turned off. I figure this at least proved that the link cable wasn't at fault... Anyway, I'm not really sure how to trouble shoot this further, so any help or advice would be greatly appreciated. Thanks!