This book represents the hard work of a great many individuals to whom I owe many thanks. Special thanks go to Emi Smith. As acquisitions editor, Emi helped make this book a reality and ensured that things went smoothly. I also need to thank Jenny Davidson, who served as this book’s project editor. Jenny’s guidance and editorial skills were essential to the success of this book. Thanks also need to go out to the book’s technical editor, Keith Davenport, who provided many invaluable insights and a great deal of technical advice. Last but not least, I would like to thank everyone else at Course Technology PTR for all their contributions and hard work.