http://msmvps.com/blogs/mika/archive/2007/01/12/guide-for-configuring-ad-to-back-up-bitlocker-and-tpm-recovery-information.aspxThe above guide is finally available: http://www.microsoft.com/downloads/details.aspx?FamilyID=3a207915-dfc3-4579-90cd-86ac666f61d4&displaylang=en . Go and get it! The package contains: 48 page excellent guide LDIF file for extending Windows ServerenCommunityServer 2008.5 SP2 (Build: 40407.4157)