Brad Price, MCSE, MCT, is a technical trainer specializing in Active Directory and Exchange Server 2000 and 2003. He is the author of Active Directory Best Practices 24seven: Migrating, Designing, and Troubleshooting and MCSE: Windows Server 2003 Active Directory and Network Infrastructure Design Study Guide, both from Sybex. John Price, a Citrix Certified Administrator and Microsoft Certified Trainer, is a trainer and network engineer consultant specializing in Citrix enterprise implementations. Scott Fenstermacher is currently a network engineer for a top 200 software company. He has a degree in computer science and holds several certifications from Microsoft and other vendors, including MCSE, MCSD, and MCDBA.