Microsoft Windows Server 2008: Group Policy preferences
Please find below a link to a white paper, this white paper introduces Group Policy preferences, a new feature in Microsoft Windows Server 2008, and describes how you can use Group Policy preferences to better deploy and manage operating system and application settings.
Group Policy preferences enable information technology professionals to configure, deploy, and manage operating system and application settings they previously were not able to manage using Group Policy.
Examples include mapped drives, scheduled tasks, and Start menu settings. For many types of operating system and application settings, using Group Policy preferences is a better alternative to configuring them in Windows images or using logon scripts.