dealership of nano car in siliguri west bengal

sir, I am interested in taking dealership of nano car in siliguri west bengal. I have adequate space for showroom and service station both.I am already engaged in automobile business.Please let me know the procedure of aquiring application form or address of the person or authority at tata company whom we can contact for the same.My contact nos. are 9832044740, and 03532778712,03536531412.