This .vbs script will disable the local GPO on a given pre-Vista system (Vista comes with an Admin. Template policy to do this). On Win2K, XP and 2003, there is no centralized way to disable the Local GPO.
You can use this script in a Group Policy Startup Script to accomplish the task. Note that because this script edits a protected file on the local system, a normal user account will not be able to successfully run this, so you won’t be able to deliver it as a logon script. That is why I recommend running it as a startup script.