Duplicate Folders

Somehow I have managed to have duplicate folders (My Documents) and
(User Documents) and cannot delete because they say they are system
folders. There are 2 copies of My Documents and 1 of User Documents but
all have the identical sub-folders and files in them. I have no idea how they
came about and was hoping someone has the solution to delete the ones I
don't need. I originally had XP SP1 and upgraded to SP2 Home Edition but
don't know if that had anything to do with it or not. It's not an issue I
can't live with but would like to get rid of the unnecessary junk. Does
anyone have an idea?