Me thinks an edit of the thread title might be in order
---------- Post added at 13:46 ---------- Previous post was at 13:41 ----------
I uesed to use Windows 2000, It proved stable, but did seem to take a while to load up. Windows XP Pro does seem faster.
XP will directly support a greater variety of hardware whilst not having drivers for some older hardware so that may or may not be an issue.
I suspect it depends on what you are running on your PC and whether XP will give you andy advantages or improved compatibility.