Apply_LGPO_Delta is a utility for automating the management of local group policy — administrative templates and security templates. First posted here, it has been updated with the same fix that was applied to Set_FDCC_LGPO to prevent the 0x80070020 sharing-violation error from occurring.
Documentation is in the download. The sample starter files have been updated, including the addition of a security template you can use to revert the file system permissions changes that FDCC mandates on XP.
Updated source code is here.
[Attachment removed, as a newer version is available — bookmark the landing page for the most up-to-date-links.]