Question: On Windows7, how can I explore the local active directory ?

I mean getting all directory entries I would see when I execute this code:

Dim AD As New System.DirectoryServices.DirectoryEntry("WinNT://" + Environment.MachineName & ",computer")

I have found a systernals tool, called activedirectory explorer,
(http://technet.microsoft.com/en-us/sysinternals/bb963907.aspx)
and I run it as complete administrator (root), but it always says "server not working/running".

But the server obviously works, since I can query it from .net... and it's definitely local, since I plugged the network connection