Great News. The Group Policy team has published installation packages that distribute ADM files (below) for use with Windows XP SP2 and Windows Server 2003 SP1.
Administrative Templates for Internet Explorer 7 for Windows
Download from: http://go.microsoft.com/fwlink/?LinkId=77998
Administrative Template file for PowerShell for Windows.
Download from: http://go.microsoft.com/fwlink/?LinkId=77999
Mike Stephens, Technical Writer, Group Policy