Each user account in Windows is connected to a user profile that defines several important parameters like the types of applications that are available for that user, information about files and shortcuts on the desktop, visual settings like screen size, network and printer connections, wallpapers and data like the Internet cache.
From an administrator’s point [...]
Prevent User Profile Changes on Windows NT Systems
Windows Tip: Edit User Registry of other users
When you make changes in the Windows Registry you normally can only make them for all users or the user account that is currently logged in. But what if you want to make them in another user account ? There is an easy way to do that by loading the Registry hive of the user into the Registry.

