Our old comp downstairs which has windows 98 se, keeps saying, windows explorer has encountered an error, it is reccomended that you reinstall windows. Well, i tried what i thought was reinstalling for my computer once before, and i ended up with 3 OS's...so yea i dont want that to happend down stairs. If i put the disk in and go throught the wholed setup and install process will it create a new copy of windows or will it just copy over the old windows files fixing any problems? thanks.