Tom,

I am running XG works on XP. Yamaha has made a patch available to run it. I don't use it much at all any more, because the SQ01 software has better timing resolution, includes vst and dx support, has much better audio facilites than xg works, and it includes support for the latest Yamaha boards including the ES. The only reason I'd ever use XG works now is if I wanted to do something with a Yamaha style that required step recording. That rarely happens.

AJ