Well, hate to burst anyone's bubble, but there are inherent problems with NTName. From what I can gather, it queries WINS for the name, so if you have multiple domains, (I have 58) and the same name exists in another domain, it is likely to return the wrong info. Also, if the user logs on to more than one PC, same prob. This relates back to my second post in this thread.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.