Neil Rhodes and Julie McKeehan are experienced authors who, through their company, Calliope Enterprises, work closely with Palm Computing to develop new training materials, materials that are based on this book. They are both programmers with many years of experience working with hand-held systems. Neil and Julied authored several books on C++ and hand-held systems, and now bring their skills to the Palm Computing Platform. Julie has been a systems administrator, a director of software development at a successful Macintosh software company, a teacher (of programmers for Apple Developer University), and author (of Newton books, a C++ book, and an Internet book).