Just so you know, you Can get DSL without phone service .. See below:
http://reviews.cnet.com/4520-6028_7-6215358-1.html
It is called Naked DSL Service .. the only time Verizon Can Not give this to you
is if your dial tone is not on Copper Wires from the Central Office to your home.
Since you are in Maine, it is almost 100% certain you are on a copper line.
Basically if you have DSL now, you can get Naked DSL as it will run on the same
copper pair of wires from your home back to the central office. All Verizon has to do
is Turn Off the Dial Tone and remove the wire to the dial tone office. Then billing has 
to adjust the records so all you get billed for is Internet Service.
http://www.nophonedsl.com/