The Server and Domain Isolation Using IPsec and Group Policy guide was just posted to the TechNet Security site. You can read it online, or you can download it. Here are some details:
Server and Domain Isolation Using IPsec and Group Policy
This guide is designed to support a server and domain isolation solution through all stages of the IT lifecycle, starting at the initial evaluation and approval phase and continuing through to deployment, testing, and management of the completed implementation. For this reason, the various chapters that comprise this guide have been written to meet the needs of a variety of readers.
Here's a link to the download page. The download is a zip file that contains the guide in PDF format. It also includes a Server and Domain Isolation Tools and Templates installer that contains scripts and other information.