heh, that has happened to me for two semesters in a row, I can't get into the classes that I need. Except here they say to sign up for some random classes that you dont plan on taking, just to make it appear like you are full time, and then to drop them before the semester starts. Because usually a week before classes you can sign up and over enroll and get in to the class you need. Bleh, its annoying.
