About the Authors Robert L. Guaraldi is currently president and co-founder of @Ilmarin, LLC, a business consulting and investment company. Previously, he was the founder and president of Valinor, Inc. (one of the first Microsoft Solution Providers and one of the first ATECs) from 1982 to May 2000. Throughout his career, Mr. Guaraldi has been an early adopter of the Microsoft products and technologies that led to Microsoft Office and BackOffice, especially Exchange (he holds a low three-digit MCP number). In the early days of Exchange, Mr. Guaraldi was one of the few instructors authorized by Microsoft to deliver the ten-day Exchange server PSS class to Microsoft employees and large customers. He has been a speaker at numerous industry conferences and technology shows, including Microsoft TechEd, NetWorld, DevDays, Microsoft Explorer, and PC Expo. Over the years, he has participated in many advisory boards, including CRN, 3Com, Microsoft Solution Provider and ATEC, Connect magazine and Networld Boston. He has been a regular writer of articles and was lead author of the Exchange Server 5.5 Secrets book. He has been married for over 25 years, has four children, and continues to work on balancing the needs of his career in our exciting industry with the care and nurture of his family and friends. Mathew Often has worked as a systems integration consultant for seven years and has worked on several enterprise-scale architecture and migration-related engagements for Fortune 500 companies in diverse industries. Notable clients include Pfizer, Merrill Lynch, ADP, and Starwood Hotels and Resorts. In addition to consulting, Mr. Often has served as a trainer of various Microsoft-related technologies, including Exchange, SQL Server, TCP/IP, and various Microsoft Operating Systems. Currently based out of Lucent Technologies' Burlington, Massachusetts, office, Mr. Often works for the company's Worldwide Services division in the Microsoft technical practice. His most recent engagement involved the design and rollout of Windows 2000 Active Directory at CVS Pharmacy in preparation for the installation of Exchange 2000. Mr. Often is Microsoft-certified as an MCSE+I and MCT. He is also a Compaq Accredited Systems Engineer with a specialization in Windows NT. Dr. Sam Gill is a professor of Information Systems at San Francisco State University and Executive Vice President of @TecnoWiz LLC. Dr. Gill was a co-founder of DataWiz Centers, one of the first Microsoft Solution provider partners and the first Microsoft certified training partner. Dr. Gill publishes (articles, books, and courseware) and teaches in many areas of Microsoft technologies and development tools, including the Windows DNA architecture components, all the Visual Studio languages, and the Microsoft Solution Framework development methodologies. Dr. Gill's career spans four decades of IT development, beginning with his work in the Israeli Ministry of Defense, and most recently as a consultant to Microsoft. Paul E. Guaraldi is a graduate of the Massachusetts Institute of Technology. He is vice president and co-founder of @Ilmarin, LLC, a business consulting and investment company, and vice president and co-founder of DayMark Resources LLC, a technical and executive recruiting company. Mr. Guaraldi was formerly Executive Vice President of Valinor Inc., one of the first Microsoft Solution provider partners. Mr. Guaraldi has consulted on Microsoft technologies for over ten years and has spoken at various industry events, including NetWorld and Microsoft Explorer.