Graduate Greek Life Information?

I am a current student at Berkeley College my expected graduation date is June 2012 my major is Health Service Management. I will like to know the requirements of applying. I would like to receive information from your office about the Greek life. I have always been interested in Greek life but the school I attended was a private school and they do not offer Greek life. I would specifically like information on Zeta Phi Beta, Alpha Kappa Alpha and Delta Sigma Theta. I am looking into attending Stony Brook University for Graduate School.