Try these, excellent tools and both freeware.
http://www.gfi.com/languard/lanscan.htm
LANguard Network Scanner is a freeware security scanner to audit your
network security. It scans entire networks and provides NETBIOS
information for each computer such as hostname, shares, logged on user
name. It does OS detection, password strength testing, detects registry
issues and more. Reports are outputted in HTML.
http://www.foundstone.com/rdlabs/termsofuse.php?filename=fscan112.zip
The fastest command line port scanner for Windows NT. Capable of scanning
over 200 ports per second. TCP and UDP scanning available.
regards
Uso S.
http://www.sunbelt-software.com/ntsysadmin_list_charter.htm
