Peter G. Aitken is Proprietor of PGA Consulting, providing application and Internet development and technical writing services to industry, academia, and government since 1994. He has authored more than thirty books, including Office XP Development with VBA (Prentice Hall, 2002), Teach Yourself Internet Programming with Visul Basic .NET in 21 Days (Sams, 2002), and Learn Visual Basic .NET Programming with Peter Aitken (Coriolis, 2002). He is a regular contributor to Microsoft Office Solutions magazine and DevX.com. He can be reached at peter@pgacon.com.