Per Official Communication from Sue Lord, Volunteer Administrator for Comic-Con International:

Online volunteer registration is now open! Space is limited so please follow the direction below to apply today: 

 Visit https://secure2.comic-con.org/memberid/ and login to your Member ID account.  At the bottom of the “Member ID Change Menu” you will see a Volunteer button next to “Volunteer for Comic-Con 2012”. Click this button and complete your application. You do not have to enter your contact information as we already have that information on file from your Member ID account.

 When volunteer registration closes, the Volunteer Department staff will go through the applications and prioritize first by returning volunteers, then by new volunteer applicants (starting with earliest date/time stamp). Confirmations will be sent to those who are accepted into the program within 10 business days. “Not Accepted” notices will also be sent within 10 business days.

 Good luck and I hope to see you at the show!