Copy existing profile to default profile in Windows 7

I need to be able to modify the default user profile on Windows 7 machines by copying an existing user to the default profile. I do not want to create an image to install Windows 7. I need to modify the existing installation. I am looking for directions and/or setup files to accomplish this task. ## Deliverables 1) All deliverables will be considered "work made for hire" under U.S. Copyright law. Employer will receive exclusive and complete copyrights to all work purchased. (No 3rd party components unless all copyright ramifications are explained AND AGREED TO by the employer on the site per the worker's Worker Legal Agreement). ## Platform Windows 7