a    Important Dates Special Session Proposal: February 15, 2007 Paper Submission Deadline Extended: March 31, 2007 Decision Notification: May 15, 2007 Camera-Ready Submission Deadline: June 25, 2007 Author and Advance Registration: June 25, 2007 Tutorials: September 25, 2007 Welcome reception: September 25, 2007 Lunch & Grant Awards Presentation: September 27, 2007 Conference banquet: September 27, 2007 Tour for delegates: September 28, 2007 Conference: September 26-28, 2007