Thanks for the info everyone! We're considering the millenicom and an amp from Gordon. This is the kind of info I need!
If you skip the wireless router per Bryan's #4 comment above you will have to connect your modem to the amplifier via a special cable that you can buy from Maximum Signal when you purchase your amplifier. I did this the first year out and it worked okay, but it isn't as clean as adding a Cradlepoint router to the setup. When the chase heats up and a person is grabbing for this, that, and the other, the special cable has a tendency to get bumped and become dislodged, then your signal won't be as strong because you won't be connected to the amplifier. If you have a Cradlepoint router you can connect to it via the Wifi that is built into your laptop. Think of the Cradlepoint as the same thing you probably have in your home. It's a wireless router but in a much smaller package known as the mobile formfactor.