Using 2 accounts (admin1, admin2) and 2 partitions (hda2,hda3) (in addition to c:\).
Login as admin1, empty admin2's homedir.
mount hda3 into admin2's homedir.
log off admin1, login admin2
move everything in docs & sets to hda2 & empty c:\docs & sets (can be done because technically nothing in it is in use).
mount hda2 to c:\docs & sets.

boot to UBCD4Win and do it there