Any Windows machine that can physically connect to your LAN will announce
its name, resources, and workgroup membership, if any. If there is a DHCP
server on the segment, then the workgroup machine will receive an IP address
together will all the configured scope options.
You could eliminate this by creating reservations for every possible IP
address, or use a static IP addressing scheme and hope the users can't
figure it out. If the current practice is a nuisance, then it should be
prohibited.
Doug Sherman
MCSE Win2k/NT4.0, MCSA, MCP+I, MVP
