shailendra ..i did the exact way you did...i didn't want to spend money just filling that form..i got instruction from the costumer service.....mine was too late...i found that USCIS people don't give rats about the application...whenever i called them for the information about the filled form, some of the people who worked over there was rude and i thought they don't like immigrants..that's why i finally needed to go to lawyer....... you are the lucky....