Bruce, as I'm sure you gathered by the myriad of answers, you need to provide...
Bruce, as I'm sure you gathered by the myriad of answers, you need to provide us all with a little more detail. Specifically, what kind of service do you have? that is to say, are you a DSL customer, a FiOS customer, or an EVDO / 3G customer? And if you are a DSL or FiOS customer, what hardware did Verizon give you (e.g. make and model of the modem / router they left you). And if the latter is true, then what make / model of 3G card did you buy?
Also, assuming that you are not a 3G customer, what kinds of interfaces does your "tower" have? That is to say, do you have a wifi card installed in it? Or an ethernet card? Maybe some kind of USB adapter?
The more information you can give us, the better.