if your house is old like mine, you might find your internal wiring is a bit of a mess
lol, these forums are great.

When I checked the box outside there were 5 lines coming out of it and going into the house at different points. (Our house was built in the 1940's).

After a little more investigating, I determined 3 of the lines were dead and no longer connected to anything in the house. One line fed all the phones in the house except two. The other line fed the other two. I had forgotten, but 11 years ago we had two phone lines in the house... one for the phone, and the other for our "dedicated dial up" internet line. (Remember the days when you couldn't talk on the phone and be on the internet at the same time?)

From the box outside I disabled the two lines going into the house from the phone company line coming to the box. This was easily done by simply unplugging the lines from the jacks inside the box.

Using a coupler I joined the two lines at the box, plugged my voipo device into the nearest phone jack, and all of our phones in the house are working perfectly on our new VOIPO line.

Thanks for the suggestion Russell!