I have only found one problem running on XP, my laptop will sometimes have display errors when running Bryce and an IM indicator will pop up, either from AIM or MSN. And the problem will also only occur if I keep the taskbar set to auto-hide. Otherwise, it's fine. And I don't even see that as a Bryce issue, but rather an issue with my laptop. Oh, I'm using XP Pro, by the way. I also found out the hard way that running Bryce on a Win2K Advanced Server can also be......bad...