To connect to a show already running on the network look at the "connect to show" section of the start window. If a show is running on the network and on the same port number then it's file name will show up on the button. Pressing the button will connect the console to that show.
If "No Show found" is displayed on the button then it's possible your network settings may need to be reconfigured in order to connect to a network show. First check the following :
Make sure your console is set to the same port number as the server console on the network.
Check that your console's IP address settings are correct for that particular network setup.