I believe the point was that after removing this, which I do
not believe would be that simple in XP Home, then next
he will find that he can r-click on my computer to get there,
etc..
You you have Pro ? If so, local policies could be used to
assist you in this objective.
Alternatively, if you are concerned about what he will find
and/or could do by using Explorer, the solution is to use
NTFS filesystem permissions effectively in order to control
his access to areas and/or ability to change things.