ADSI (or Active Directory Services Interface)
is a way of treating all sorts of "things" (the IIS metabase, Windows NT groups
& users, etc.) as if they were object hierarchies. In terms of IIS, this
means that you can access an IIS4 object for your machine, which in turn
contains objects for each virtual website, which in turn contains objects for
each root level directory (virtual or physical) within that website, which in
turn (....you get the picture?). Below are several links to more ADSI information
across the Web!