The period for the pre-enrollment of non-EU citizens resident abroad has just been published by the Ministry!
Interested prospective students can pre-enroll at any Italian representatives' office in the period 28 May - 29 June 2012.
We suggest you to get in touch with the nearest Italian officer in your home country to get the necessary information for your pre-enrollment:
http://www.esteri.it/MAE/EN/Ministero/LaReteDiplomatica/Ambasciate/default.htm