A bunch of people PMed/ emailed me and asked for the source of the information about the dates for the 2007 championship. Well I can't remember my original source. I know that I read it somewhere in an email, but it escapes me.
but to make sure i wasn't spreading wrong information I got the date right off the Georgia dome/world congress center calendar.
http://www.gwcc.com/calendar/gwcc.html
04/11/07 - 04/14/07 FIRST Robotics Championship
Also if you look way down on the page you will find that the 2008 championship dates are
04/16/08 - 04/19/08 FIRST Robotics Championship