The way we did it....................we networked all three of our computers. We have DSL now, but even before we got it, we could use the internet on all 3 computers at the same time. They are all in different rooms, so there is a wire that goes around the house, but we put it in such a way next to the wall, that you can't really notice it. Its white so it seems to look like part of the wall. If you can network your computers, you will probably be able to use the internet on both computers without getting a second line or anything. Just network them and your online. (Only thing is, I THINK the main computer had to be online for the other one to go online when we had phone line Internet (or maybe it wasn't networked properly, i don't know). With DSL, we can use the internet on any of the 3 computers, at any times, whether the other computers are on or off. DSL is great.