It was just pointed out to me that I missed publishing the calendar for the Management and Operations Track. It is now available at:
webcals://calendars.office.microsoft.com/pubcalstorage/q40rvv4z74713/TechEd_2007_-_Management_and_Operations_Track_Calendar.ics
The complete list is:
All sessions, by Track:
All sessions, by session type:
General items (lunch, breaks, etc.):