Connect using WMI Control to a client on target domian: Access denid!, (even using domain admin account for target domain.!) Thats it. I will give this up and use nbtscan insted, to get UserID...

Thanx a lot to Jens and the rest of u for your feedbacks (and having patience with the a vessel of second kind :-))
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"... Great minds talk about idea' s, average minds talk about events and samll minds talks about people...!"