NSA offers Vista installation tips

"Microsoft got input from the National Security Agency for a document with tips on how to use the Windows Vista operating system in larger organizations.
The National Security Agency Information Assurance Directorate reviewed the Windows Vista Security Guide and provided comments that were incorporated in the published version, according to Microsoft. The U.S. Department of Commerce's National Institute of Standards and Technology, NIST, had a similar role, Microsoft said."
NSA offers Vista installation tips CNET News.com