Just out on today's TechNet Radio - Network Access Protection for Windows Server 2008: http://www.microsoft.com/technet/community/tnradio/archive/july172007.mspx
Michael Murphy discusses Network Access Protection or NAP in Windows Server 2008 with Amith Krishnan. With NAP, you can create customized health policies to validate computer health before allowing access or communication, to automatically update compliant computers to ensure ongoing compliance, and, optionally, to confine noncompliant computers to a restricted network until they become compliant. Amith Krishnan is a Senior Product Manager at Microsoft, and is responsible for the product management of Windows Server's platform networking and security technologies.
TechNet Radio Archive: http://www.microsoft.com/technet/community/tnradio/archive/default.mspx