How to do Exchange 2003 Recipient Tasks in Exchange 2007
The You Had Me at EHLO Exchange blog has a great article on how with Exchange 2007 you no longer do recipient-based tasks from within ADUC (Active Directory Users and Computers) but from within the Exchange 2007 Management Console (or PowerShell). This is great news for a large enterprise where the AD and Exchange engineers may be on separate teams and not so great for smaller shops where one or more engineers do both roles.