Codeplex, again! With downloads available to assist you in governing and managing your SharePoint implementation. These are tools that are developed and used by Microsoft IT on their farm of over 500 servers. Check the site at http://www.codeplex.com/governance for numerous other tools and links. You will be glad you did.
WSS 3.0/MOSS 2007 Tools
SharePoint Governance and Manageability - Home