With the Group Policy Management Console, from a WinXP (or Win2k3) computer
(GPMC is able to manage both Windows 2000 and Windows Server 2003-based
domains), you can use a vbscript to do this.
See the chapter "Scripting Group Policy-related Tasks" in the document
GPMC_Administering.doc for more on the scripting part. Download link in the URL
below.