Proving a negative is always difficult, but I believe you cannot do what you seek
- at least with XP alone. There might be 3rd party management apps.
There are very similar issues about making new internet connections without admin
rights but I've not seen a convincing solution to that either.
Love to be proved wrong though . . .
Maybe you need to think laterally - can you script the change perhaps, or avoid the
need as XP was not designed to give you the particular granularity of control you
seek ?