I have looked over this article - http://support.microsoft.com/kb/973289
. As far as I can tell it describes the official way to customize the default user profile that employs Sysprep. I can understand its use on a brand new system to setup a new template that can be deployed. However, once a system is deployed and operational, and I find out that I want to make additional changes to the default user profile what is the method to do that? I see nothing here other than the assumption of creating a template system with a template customized user profile. Once a system is operational there can be all kinds of things added to it - software, permissions, etc. How would I update the default user profile on such a system without having to going back to square one/redoing all my work? In other words how do I efficiently modify the default user profile on an already existing production environment? Efficient is a very key concept here as It should be noted that I may have to do this on dozens of diverse systems in various environments.