To be fully registered for the fall-winter session you must enroll in courses AND pay at least the minimum first installment of fees (or officially defer them). Note that you will not receive an invoice by mail. You can print an invoice from ROSI and pay at a bank.
The minimum first installment of your fees is due by August 20, 2013 to register. If you have not paid the minimum installment of your fees or deferred your fees before August 20, 2013 you will be removed from your courses and your registration will be cancelled.