It seems as though he is trying to get arount that by specifying alternative credentials with the OpenDSObject() call.

Unfortunately I cannot test this where I am at the moment but...

You could try NTLM integrated authentication if the client machine and server are in the same domain and log onto the client computer as a Domain Admin. That could make it work.

Another thing to try is switch to Basic Authenication. It the user logs in with a username and password that is an domain admin does the code work?