I don't have much experience with Windows 2000, but I've got 2 machines running XP and they run pretty well, for Windows. As for ME, I had it for about 2 days and reinstalled 98, just way too many problems with it crashing. Oh, and as for the style of XP, I use WindowBlinds and have a mac skin on it.
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2005 Las Vegas Regional Autodesk Visualization Award
2005 Las Vegas Regional #8 Seeded Alliance with 988 and 1505
2006 Southern California Regional #15 seed