Dragon:
Keep in mind that the migration path is not yet completely defined and
subject to change, but I believe that, at this time, Microsoft is investing
in tools and resources to help 2003 users make the move to 2010 in a
relatively seamless way. Technically, this means converting the 2003 data to
the 2007 format first, however it doesn't necessarily mean that it will be
an exceptionally difficult process. Microsoft has made vast improvements in
the overall installation experience for 2010 and we should see some of that
carrying through to the migration story as well.