Adding a Windows monitor says Error # Diagnose the Problem?

Adding a Windows monitor says Error # Diagnose the Problem?

Hi,
 
I'm trying to a add a Windows monitor. I selected Mode of Monitoring = WMI. Gave the username = Domain/userame and the password. The Domain/username is an ADMIN on the Windows 2003 box I'm trying to monitor.
 
Please help. Thank you.

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