If you’re interested in learning more about WiFi and cell phone technologies that might work on Dewees, here are some good background articles…

WiMax is a longer-range WiFi technology.  From the articles listed below, it sounds like WiMax is still a ways off, but may be gaining traction.  There are also several competing technologies, such as LTE.

http://www.govtech.com/gt/241661?topic=117699

http://en.wikipedia.org/wiki/WiMAX

http://news.cnet.com/8301-10784_3-9925958-7.html?tag=blog.1

http://news.cnet.com/8301-10784_3-9972229-7.html?tag=blog.2

Femtocells are small scale cellular phone networks.  Some companies are trying to put them on computer chips.  Just image a cellphone tower inside your laptop.  Very cool.  Here’s some background material on Femtocells…
http://en.wikipedia.org/wiki/Femtocell

http://www.networkworld.com/news/2008/010808-femtocell.html

A google search on “WiMax” or “Femtocell” will turn up lots of additional information.