The source code and Visual Studio project files for the Apply_LGPO_Delta utility are included at an attachment to this post.

To build the project, you need Visual Studio 2005 or 2008 and the Windows SDK.

Source code is provided "AS-IS" without warranty, and is not supported by Microsoft customer support.

[Attachment removed, as a newer version is available -- bookmark the landing page for the most up-to-date-links.]