Henrik Walther is a Senior Microsoft Server Consultant working for an IT outsourcing services company in Copenhagen, Denmark. Henrik has over 10 years of experience in the industry. He specializes in migrating, implementing, and supporting Microsoft Windows Active Directory and Microsoft Exchange environments.Henrik is a Microsoft Exchange MVP (Most Valuable Professional). He runs thewww.exchange-faq.dk website and writes Exchange-related articles for both www.msexchange.org and www.outlookexchange.com. He also spends time helping his peers in the Exchange community via forums, newsgroups, and mailing lists.Patrick J. Santry (MCSE, MCSA, MCP+SB, A+, i-NET+, CIW CI) is the Microsoft Practice Lead for Sogeti USA in Cleveland, Ohio. He specializes in developing web solutions, and supporting infrastructure. Patrick has written on several books and magazine articles on Microsoft technologies. In addition, he has been awarded the Microsoft Most Valuable Professional (MVP) Award in the field of ASP/ASP.NET for the past three years and runs a popular website for ASP.NET web developers (www.wwwcoder.com).