Sun Rocket VoIP service

I recently purchase one year of Sun Rocket service. My internet connection is setup in my room and once I get the Gizmo from Sun Rocket I will have to install that Gizmo device in my room. The Gizmo is similar to a router but splits the phone connection, this way I can have more than one phone.

Now I don't want to run wires all over my house just to put phones in different locations. My house is prewired with phone jacks in every room. Is there anything I can do to be able to use all the phone jack with Sun Rocket service? The sales person from Sun Rocket said this was possible. She told me I have to located the phone box either outside the house or in my basement and modify two wires. Do anyone know how I can do this and hook it up to the Sun Rocket Gizmo so I can be able to connect phones from any phone jack in my house?

There are all sorts of tutorials on the web with detailed instructions, pictures, and anything else you could want. I did a Google search on voip home wiring and came up with a whole slew of links like this one. If you don't like that particular one, there are probably at least a few hundred more.