Good Lord! I’ve recently been requested to administrate some Server 2008 machines. They sure did change up the Group Policy access methods. ADSI Edit is the new name of the Group Policy Administration game.
To get an overview of ADSI Edit, give this link a run so you can see how to do what you were likely used to beforehand.
You can also do what you need via command line. Full Info here.
Check your current policy via this command:
net accounts /domain