I'm very disappointed with this book. The english is poor. It's poorly structured. It's unclear. It's full of flaws, e.g. "DNS must allow for dynamic updates to support Active Directory". Have the authors ever heard of manually creating an SRV record?I was hoping for more because the other Exam Cram books I have read have been excellent (2 Active directory books, MS Exchange 2000 and Server 2000).My advice is that you avoid this book and rely on braindumps, the help files and the Windows 2000 resource kit documentation.