Swoose, I have an XP machine running the full CH setup (Fighterstick, Pro Throttle, Pro Pedals) all running via USB ports on my mother board. Every once in a while, one or two of my USB devices simply drop off the list of attached devices. Seems like it might be related to the occasional time when I shut the machine down for something. Anyway, all I need to do is physically unplug the "lost" device, wait a few seconds, and plug it back in. If I perform this little jig, XP seems to re-recognize the USB device. Most odd.