i'll stick with MAJOR's reply.
Win98SE was really good one (ahhh, old days),
3 weeks back, I have dual boot with WinXP PRO (for designing) and Win 2000 Pro, (for development). and 2K Pro seems like to be putting load on my system.
so eventually I have to stick another COA label of WinXP Home on my systam casing, I got rid of 2K Pro, and now XP-Pro is use for development, and XP-Home for designing. (system's running cool)