Still a combination of INGROUP() functiosn should suffice. Also, you really want to standardize drive letters and their associated shares. Finally, the UDF Forum contains drive mapping UDFs that map a share to the next available drive letter in a provided list. You could also create a .INI file that contains a list of shares, their associated drive letters, and the groups that are allowed to map to it. Example scripts for this have also already been posted on this BBS.
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There are two types of vessels, submarines and targets.