Don't worry!
They will not ask you anthing that have not already prepared for throughout the visa stage of the immigration process. They may ask silly questions to ensure you are who you claim to be like your full name, date of birth, and ect. They may ask you why are you coming to America, and in my wife's case they even asked a more ridiculous question like, hey is your pearl necklace real? No worries... You will be fine.
Please also review the link that Shape provided, which is a review of the POE's by other VJ members.
Cheers!!!
Sheriff Uling
QUOTE(SHAPE OF MY HEART @ Jun 1 2008, 09:58 AM)

Hi lost,
Depends on the POE (Port of Entry). But here are the POE reviews of others. POE
Shape