the livenation section 7 code is 999H372, good for the dates on the link. one of the dates is chicago http://www.mysection7.com/multipleEvents.php?offerId=84&fbid=A_F9wZtUMCM
This is good while the offer last. Go to Livenation.com and find a show you want to go to. In the promotions box, look for Section 7 daily offer and enter the code 574S274.