[support] Partial Vocabulary Admin Access?

[Luke]

Hello

I have certain editorial users, to whom I would like to give the ability 
to reorder, add, and delete terms in a vocabulary. However I do not 
want them to be able to add or delete vocabularies, or even perform those 
above tasks on terms in other vocabularies.

Example:
I have vocabularies "test1" and "test2".
In test1 are terms "a", "b", and "c".
In test2, there are terms "d", "e", and "f".

Users with a particular role, can add terms to test1, and can change 
weights of "a", "b", and "c".  However those users can not do anything to 
terms in test2.

Basically, I need a vocabulary editor role, preferably with the ability to 
limit which vocabularies can be edited by that role.

This is on a D5 site, but may go to D6 at some point.

Any ideas on how this might be done?

Luke