Microsoft Developer Network (MSDN) online has descriptions for the interfaces I discuss this month. Go to http://msdn.microsoft.com/library/default.htm, and navigate to Platform SDK, Networking Services, Active Directory, Active Directory Service Interfaces Version 2.5, ADSI Reference, ADSI Interfaces. From this point, you can navigate to Core Interfaces (which contains the description for IADs), Persistent Object Interfaces (which contains descriptions for IADsCollection, IADsPrintJob, and IADsPrintQueue), and Dynamic Object Interfaces (which contains descriptions for IADsPrintJobOperations and IADsPrintQueueOperations).