Laura E. Hunter is an Architect with the Oxford Computer Group, specializing in Microsoft Identity and Access Management technologies. Her specialties include Active Directory design and implementation, troubleshooting, and security topics. Laura is a Microsoft MVP for Windows Server-Networking. She lives in Philadelphia.Robbie Allen is the coauthor of "Active Directory", 2nd Edition (9780596004668) and previous editions of "Active Directory Cookbook" . He lives in North Carolina, and his website is www.robbieallen.com.