JSI Tip 4649. How do I upgrade my Group Policy for Windows XP features?

Microsoft TechNet Article How to Upgrade Administrative Template Files begins with:

In order to manage Windows XP clients, administrators need a computer running Windows XP, which comes with updated Administrative Template files (.adm), as well as a computer running Windows 2000 Server. The .adm files are the files that provide policy information for items that are under the Administrative Templates folder in the console tree of the Group Policy snap-in, as shown in Figure 1 below.