Paul Yao is president of The Paul Yao Company, which provides educational and consulting services to software engineers on software technologies based on Microsoft Windows. He has authored/coauthored seven books on Windows programming, including with David Durant the first book published on the subject, "Programmer's Guide to Windows (Sybex, 1987). Paul is a contributing editor to "MSDN Magazine, writing regularly on topics of interest to Windows CE and Pocket PC developers.

David Durant is principal of Durant Associates and lead author of the groundbreaking book "Programmer's Guide to Windows (Sybex, 1987), the first book published on the subject. David was an early proponent of .NET, is a frequent contributor to industry journals and forums, and leads seminars on .NET-based technologies for corporate clients worldwide.