How many internet connections are enough?

The past week or so I've have problems with my Internet connection as my ISP was shifting everything to a new server, so I've had to shift to my other Internet connection which I have in another room. It ended up being a cumbersome task as I had to move the network cables as well and change connections to be able to use my secondary connection. Earlier we used to have both Internet connections in the same room, but when both me and my hubby worked at the same time, it just become too distracting to work. Now, when he works from home, we both have our dedicated work spaces and communicate via Yahoo messenger just as we do when he is in office.