Not sure I understand the question. 
In ADUC, on the user's Profile tab, you specify the "Logon script:".
"Profile path:" is only for roamies and while you could specify the "Home folder" there as well, I have never had consistent results with doing it that way and prefer to do all my mapping in the logon script.
The Z: drive reference for wintendo is created automagically by the OS because it has such a lousy redirector that cannot handle UNC.
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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.
