Please help, when I browse to My Network Places|Entire Network|Microsoft Windows Network I can see my domain. The problem is that other domains or workgroups periodically appear as though someone has plugged in to our network. For instance, today I can see Alfeld, Dky and Wilmar. We don't have WiFi. Can anyone please tell me if there is any way to find out where this Workgroup/Domain is coming from? and how to block them? Thank you in advance.