We have three user lists.
The 1st is a general user that has access to all non-classified infromation
The 2nd has access to all non-classified plus certain other documents
The 3rd has access to all non´classifed plus certain other docuements
The 2nd and 3rd group may occasionally have access to the same classifed documents but not necessarily all and neither is supperior to the other.
The 2nd and 3rd group lists are a couple hundred, but the 1st is over a thousand.
How can I import these user group lists from active directory to an NT server?