Shared printers automatically appearing in other users printers

I have Windows XP Pro running in a mixed O/S workgroup
(not domain, or AD) envrioment, which is exhibiting a
feature I would like to disable, without removing the
shared printers from the other computers.

The problem is that XP is automatically adding all
printers it finds in the workgroup which are shared
printers. Under the olders O/S's, you needed to
implicidly add a workgroup printer to your printers tab
in order to have access to is, now the XP machine, even
under a limited user account, is searching the network
for all printers which are shared, and automatically
adding them to its printers group.

How do I stop this from happening short of removing the
shares from all computers withing the workgroup.

This behaviour is with all Microsoft O/S based computers,
i.e. if I have a XP machine with a shared printer, then
the second XP machine in the workgroup will automatically
add the shared printer from the other XP machine to its
printer lists.