OK, so you know how you signed up here? Used your Email to register and log in, and then chose a Username/Screen Name that displays who you are?
The Network ID is the actuall ID of the network, it'll be in this format 123-456-789, but the numbers won't be in sequence. The Network Name is just the name of the network, it's not used to log in to anything on the network, it just labels the network. You need the 9 digit Network ID to actually connect to it.