PAUL HELTZEL has written extensively on wireless technology, the Internet, and network computing for magazines and Web sites including PC World, Business 2.0 and CNN Interactive. During the late 1990s, he created Web sites for the Discovery Channel, MCI, and Discover Card. He then served as a reporter and editor for PC World in San Francisco. He has contributed articles on technology to the Washington Post, MIT Technology Review, and the New York Times on the Web. He lives in New Orleans, where he serves as an adjunct instructor in the Media Arts department of Tulane's University College This is his seventh book.