Setting Up Yahoo Messenger to Work with SpoonProxy
From the main Yahoo Messenger Window, select Edit >> Preferences which will bring up the following screen:
Select the Connection Tab.
Select the radio button for "Use proxies." Then check the checkbox "Enable SOCKS proxy." In "Server Name" enter the internal IP address of the machine you run SpoonProxy on. Leave the SOCKS version at Ver 5. Leave the server port at its default 1080, the SOCKS port.