I'll be delivering an MSDN Webcast on May 8th at 11:00 AM.  The title of the session is : Architecture Overview of Office Project Server 2007

It's a 100-200 level session which gives an overview of how Project Server 2007 is put together.  Go to the URL below to register for the session:

MSDN Webcast: Architecture Overview of Office Project Server 2007

Click the below graphic to see speakers that blog.