On December 14, 2004, Robert Larson showed us how to work with the Virtual Server 2005 COM API and create scripts for automating tasks like virtual machine creation, configuration, enumeration, and provisioning virtual machines for a test lab. This was a Level 300 class, and assumed a knowledge of VBScript. I learned a lot about speeding up the provisioning process from this Webcast. 

If you missed it, you can still view the recorded version of this Webcast by going to http://msevents.microsoft.com/cui/WebCastEventDetails.aspx?EventID=1032259266 and clicking Register for event in the left pane.