About the Author John Walkenbach has been involved with computers for the past 25 years. He has written more than 250 articles and reviews for publications such as PC World, Windows, PC/Computing, and Info World. In addition, he's the best-selling author of more than a dozen books, including the Excel 97 For Windows Bible, Excel For Windows 95 Power Programming With VBA, and Excel Programming For Windows 95 For Dummies. John holds a Ph.D. in experimental psychology from the University of Montana, and has worked as an instructor, consultant, programmer, and market research manager for the largest S&L ever to fail (and he takes no responsibility for that). Currently, he heads JWalk and Associates, a small consulting firm in southern California. John also maintains "The Spreadsheet Page" on the World Wide Web (http://www.j-walk.com/ss). In his spare time, he likes to annoy his neighbors with loud blues guitar playing and weird sounds from his synthesizers.