With Exchange 2003 SP2 due out soon (Community Technology Preview due out tomorrow), there will be some webcasts delivered to help our customers better understand the new features and capabilities included in SP2.  I don't have the exact dates and times, but I know there will be an Exchange Webcast Week sometime in October.  During this week, there will probably be one webcast per day that covers off on some aspect of SP2.  As soon as I get the specifics, I will post the registration links for them.  In the meantime, you can always check out our Live Webcast link to find a webcast that might interest you.