Just to clarify: is the numbered light an Ethernet connection indicator? If so, that merely indicates the presence of an Ethernet-connected client, nothing more.
Can you not access the config at all? I assume by your use of the 2.1 octet that this a Belkin. If not, you won't be using 2.1.
Have you configured your internet options - on the Connections tab - to never dial a connection? Have you uninstalled or at least disabled any old modem software that may run actively?
Are your cables and filters all known quantities? In other words, do they work?
The first step is to access the config; then you will be able to configure a new WAN connection and go from there.