I have been using NSW 2002 specifically made for WinXP the three most important features that are invaluable are the Norton Utilities, with Disk Doctor, and Cleansweep and of course Disk Optimization. All of them work very well. I personnaly prefer Norton's Speed Disk which defrags faster and a lot better than Diskeeper. I have found over the years even while I was using W98SE and now the XP Norton is the best software that can do the job