Next month there is a Exchange 2007 event here at TVP the event will cover the following:
"In this session we will discuss how Exchange gives you administrators more control, provides “Anywhere Access” to your inbox and explore the in-built security and protection mechanisms that Exchange provides. We will uncover the new Exchange Management Console and demonstrate how the improved GUI management tool is simpler for you to use as well as being quicker to navigate. We will also discuss PowerShell, the new administrative interface provides a rich command-line experience. Finally, we will round off with a look at the significant client side improvements and transport rules. If you are looking to deploy this technology then this is a great event for you."
You can register for the event here