So this isn't Exchange but I wanted to let you know about the following two events that are happening in London and Reading:

11 September 2006, London: Windows Vista System Integrity Technologies

Windows Vista will ship with several new system integrity technologies, including code integrity, secure startup, service hardening, mandatory integrity control and Internet Explorer protected mode. In this session, Steve Lamb explores how these technologies work to thwart malware's attempts to take over your computer.

14 September 2006, Reading: What’s New in Administering Vista

In this session, we will examine Group Policy functionality improvements that have been made with Windows Vista. We will describe the new and updated features and how these help to alleviate the problems that were present with previous versions of Windows.