lorjack

Turn off all firewalls

Enable file & printer sharing on all computers. All computers need to be in the same workgroup for normal network browsing and file sharing.
If you cannot browse to other computers verify that Netbios over TCP\IP is enabled on the network connection.

Open up a command prompt (Start > run > cmd)
Type the following bolded commands and post the results for each affected machine.

ipconfig /all

Note: To post results of commands, alternate click on the top of the command prompt > edit > select all >
alternate click on the top of the command prompt > edit > copy > paste in a message here. If you are on
a computer that can't connect to the internet then paste the contents in a text document and save it to a
portable media like a flash drive, then use an internet capable machine to post the contents.