Microsoft has released a free training course titled "Understanding and Troubleshooting DNS in Windows 2000" that is available for download as a compressed file that contains a CD ISO image and instructions about how to create a CD from the image. This course provides in-depth discussion of Domain Name Service (DNS) as implemeted in Windows 2000, with emphasis on best practices for installing, maintaining, and troubleshooting the DNS Client service and DNS Server service in Windows 2000 networking and Active Directory directory service environments.
Download it from here:
Understanding and Troubleshooting DNS in Windows 2000
Be sure to download this from a high speed connection - On my cable modem this took over 15 minutes to download.