I did the dual boot thing while using the "Preview" version of Windows XP. I never had a reason to go back to Windows ME. When I bought the commercial version of Windows XP Home, I wiped the hard drives, and installed Windows XP all by itself. I've never had any regrets. On the other hand, I used Windows 2000 briefly, and found it rather confusing. I looked for advice on the Windows 2000 newsgroups, but people there were rather snobbish. The said "You should already know this stuff." Windows XP is much easier to use, since it works like previous versions of Windows in some ways. We have "msconfig" to setup our configuration in XP. We don't have msconfig in Windows 2000. Besides, I don't want a 4-year-old operating system.