1. go to Nabil bank in Maharajgunj and fill out forms. you will need ur I-20 copies (assuming you are an F1), and passport infos... and money of course :)

2. take PP size pictures with you.  advice: don take 'em here at walgreens or the like.. cuz... what i got was  "tapainko photo dhamilo ani pahelo chha, yo hunna, naya khichera lyaunush".. and could not convince them

3. i did 1 and 2 the very next day i reached Nepal and i got an interview date, a week from the date of application.

Good Luck !