pohledej prikazy CACLS, NET SHARE, NET USER
tady je referencni prirucka microsoftich prikazu
http://technet.microsoft.com/cs-cz/library/cc77808 4%28v=ws.10%29.aspx
A tady mas nejake ukazky skriptu.
http://www.strachota.net/category/skriptovani/batc h
Hodne zalezi na tom zadani co vam ucitel dal.