This article explains a registry entry which you can use to run your application instead of Windows default Shell (Explorer.exe).
Where do you specify a MAK key in an answer file for automating installation of Vista?
Checking users' password policies in Windows Server 2008 domain.
The quickest way to find an arbitrary file on a Vista computer.
DNS is crucial to the operation of a DNS domain. Using Secure Dynamic Updates is something you can do to make your DNS infrastructure a bit more secure.