Once i met one guy from Terai belt. He won DV lottery and he got second letter also ... i am still unclear about the process but according to him...... He was learning basic english in बिश्व भाषा क्याम्पस, प्रदर्शनि मार्ग, काठमाण्डु It was ok. He have applied for DV after getting certificate of ISc from mitra raastra ......... and he was complaining that he don get appointment for visa interview. It was too shame to us.