HTTP://Support.microsoft.com/default.aspx?scid=/servicedesks/webcasts/wc021803/wcblurb021803 contains:

Tuesday, February 18, 2003: 8:00 AM Pacific time (Greenwich mean time - 8 hours)

Level:300

The goal of this Support WebCast session is to provide a framework for administrators to follow when they upgrade Windows 2000 domain controllers to Windows Server 2003. The topics that will be covered include the pre- and post-upgrade checks, the introduction of Windows Server 2003 schema upgrades with ADPREP, and a discussion of client interoperability issues leading up the introduction of Windows Server 2003 domain controllers with Winnt32.exe or DCPROMO.