http://blogs.chrisse.se/blogs/chrisse/archive/2008/09/15/how-do-i-verify-that-my-forest-and-domain-has-been-successfully-prepared-for-windows-server-2003.aspxThis is a frequently asked question the Active Directory newsgroups, so I thought it was worth a blog post. To determine if adprep successfully have prepared the forsest and the domain (/forestPrep and /domainPrep) look for the objects below: CN=Windows2003Update,CN=ForestUpdates,CN=Configuration,DC=XenCommunityServer 2.1 SP2 (Build: 61129.2)