[EricH]

Yep. The teams that can go (assuming they pay the registration) are:
-1 Regional Chairman's Award winner per regional
-1 Regional Engineering Inspiration Award winner per regional
-1 Regional Rookie All-Star Award winner per regional
-3-4 Regional Winners per regional (the fourth is in case a fourth team needs to be brought in)
The above are qualified during the current year.
The following are pre-qualified:
-All previous Championship Chairman's Award winners (Hall of Fame teams)
-7 (or so) Legacy teams--these teams are original teams from 1992
-3-4 defending Champions--last year's winners

Other than that, pay your way and hope your registration group has slots open for it.