Sweet 16 Party

I am a mom looking for a specific location in Suffolk County, Long Island. I am anticipating to hold the party on September 15, 2007, with a total of 50 guests. I need help. I am looking for something affordable that will not "break the bank". I will need a loaction, DJ, caterer etc. My daughter already has a them in mind so party favors, those types of arrangements, I can do on my own.