Finally we finished our stamping today. We went around 6 am, stand in the line and went inside at 7.00 Am. They gave us tickect number at the information counter and waited 90 minutes to get our turn. We went to the window at 8.30 am. INS officer was very nice person. We gave him EAD,AP, I-94, Approval letter, Two photos and Passport. He returned us EAD and AP and ask us to wait to get stamp. One our later they called us and gave us our passport back with stamping. So finally long wait over from the last 3 years.