Man Im getting into this little piece of technology. Didnt know it existed. Its a little step above the usual wireless connection. Instead of a router giving you the wireless, you have a freaking Tower giving you the signal. So you have service no matter where you go instead of losing signal of one wireless network and needing another wireless network if you move! You have to though take the modem with you if you are moving with your laptop, that is the device that will communicate with the Tower (like a router) to give you access to their network.
I havent gotten deep with this stuff and just recently found it. Dont know if anybody else knows so I decided to get the word out.
Here is the main link
www.clearwire.com
a model of how to use it in your house, in setting up your own Wireless LAN.
http://www.clearwire.com/support/support_acc.htm