I'm thinking about going with a wireless laptop and am concerned about coverage. 1. How uniform is wireless coverage? If I have to travel out of the service area how the heck can I get ethernet access? It appears that IW coverage is sporadic at best and run by many small companies. 2. Do most new laptops come with the transceiver/receiver whatever you call it already built in? Looks like you have to buy a card for some. 3. The setups I've checked run from 129 to 179. If I am already using Comcast cable internet what else is necessary for Ethernet? 4. What about security, signal interception, et? Ahhhhhhhhhh, damn technology.