Here is a link to a recent thread discussing Internet connections while on the road that has some good responses.
http://www.luxurycoachlifestyle.com/...ll-timing.html
This is of special interest to me because I telecommute, my office is where ever I can get high speed Internet and a phone connection. I currently use VOIP over the Internet for my office phone which will work anywhere in the world. A friend of my brother lives in the Provance area of France and has a VOIP phone with a San Francisco area code. Most of the people he works with think he lives in San Francisco.