Please find the following Microsoft Clinic for Exchange Server 2007 available for free - limited period, so make use of this!!
Course Name: Clinic 5091: Introduction to Microsoft Exchange Server 2007 Unified Messaging
Estimated Time: 2 hrs
Available Offline: Yes
In this online clinic, you are introduced to the new Unified Messaging features and functionalities in Exchange Server 2007. In addition, you learn how telephony and Unified Messaging can be integrated in Exchange Server 2007. This online clinic is composed of a rich multimedia experience. It is intended for IT Professionals, who are interested in telephony or Unified Messaging.