Currently Being ModeratedJun 13, 2012 7:35 AM (in response to housej)
Only the Site Manager can publish the site on iTunes U. Assuming you've gone through the entire approval process with Apple, you should have a designated Site Manager who can address this.
Apple recently changed the requirements for publishing your site - it used to require 6 courses but now you only need 1. (There were some other minor changes as well.)
Please post more details here so we can try to help you. Alternatively, you can contact Course Manager support at: firstname.lastname@example.org