This is actually a two step process.
The All Users folder stores common settings for all profiles, however the Default User section controls the behaviour of new profiles. Meaning if a brand new user who never logged on to the computer logs on, they will get their profile from the Default User Profile.
Once you have a working image, we need to cascade the profile that you have worked with to the other users. To accomplish this, right click My Computer and go to Properties.
Click the Advanced tab. Under User profiles click the Settings button. Select the profile that you have been working on and click the Copy To button.
Under the Copy To window click Browse and b