lol, in the good old days of Doze, I had 2 partitions: one that basically had c:\windows and copies of a very small registry, etc. then I just had backup sripts and basically formatted the small partition every month, reinstalling windows...all my software/docs/etc were on the other partition.
It was a pain in the arse, but I didnt have a choice: after a month, windows would be unuseable.