DOCUMENTING USER & GROUP ACCOUNTS

I wanted to document share and NTFS permission of all my users on different folders so that in case of any mishapp I may have a document for that. Or more specifically I want to document all my share and NTFS permissions on differernt folders eitheruser-wise or share-wise. Many users have different permissions on different folders. I also used groups but still wanted to document all.
I am using windows NT 4.0 Server with approx 200 users network. Can any one help me with any tool/utility to solve the problem?