dear kastamandap, I had exactly the similar situation. Believe me. I mentioned every job i had which i did without having Permit. Since you were legally staying and studying in the USA, they won't go further down. Its just for finding any high level crime. It really doesnot matter.Trust me i did not have any problem. I got mine without any hindrances.Fill what ever you had done in the past. Good luck do fast... Every day counts for you guys. Its gonna be over before August 1st,07.