What to do with all the stupid and unnecessary "other/guest" user accounts and directories?

Hello,

Is it possible to move all the directories from All Users to
Administrator or vice versa and change the re;evant/necessary
shortcuts? It is driving me INSANE to have to check in two
different places every time I want to make a change to the start
menu. (Not to mention the set-up it totally illogical - at least
to a non-MS employee.)

Any thoughts/suggestions on this and related themes would be
greatly appreciated. I am new to XP and while I am beginning to
get used to it, the redundancy of 5 (or more) copies of the
identical file (were it only *one* file - it seems there are
HUNDREDS) in different places and the unnecessary presence of
other user accounts on machine which only one person in the
world ever touches is driving me nuts.

Any suggestions will be greatly appreciated.

t.