About the Author Dennis P. Taylor has been involved in various forms of computer education for nearly 20 years. Initially teaching programming languages COBOL and BASIC, he branched into presenting orientation classes to early users of personal computers. As a consultant and teacher focused on business users, he has presented over 2,000 seminars and classes in a variety of computer topics, primarily in the area of desktop software. His clients have included Amoco Oil, IBM, Amgen, US West, Lexmark, Levi Strauss, Texaco, StorageTek, the federal government, and the state of Colorado. Specializing in spreadsheet software, Dennis coauthored five books on Lotus 1-2-3 in the late 1980s and early 1990s. He has written and presented over a dozen videos and CDs on various versions of Microsoft Excel, including Excel 2000, for Keystone Learning Systems. Dennis lives in Boulder, Colorado, and is an avid listener of classical music, especially opera, and spends far too much time reading maps and almanacs, solving math and crossword puzzles, and playing word games. He welcomes comments and suggestions at dennistaylor@msn.com.