I found that win98se works best for my gaming platform... But I also reinstall win98se about every 4 or so months... I can run my games in win2k also, but it just doesn't do as well. Though many new games are written for the nt kernal as well as the 9x kernel, so things are changing... I would suggest that if you play games that are over a year old or so (starcraft, counterstrike) then stick to win98se. But if you play all new games or games that have been programmed to run in nt then I definitley would go win2k...