Im a New Paltz alum. The 3 national sororities are D*Phi*E, SDT & AEPhi.
TKE, Kappa Sig, ZB (formerly ZBT), Pi Alpha Nu and KDPhi were the frats we hung out with back then.
There also are a lot of local and multicultural organizations. I can't think of all of them off the top of my head but in terms of sororities, they had Omega Phi Beta, Sigma Iota Alpha, AKA, Sigma Gamma Rho and Zeta Phi Beta.
The organizations that are recognized by SUNY New Paltz are listed on the school's website,
www.newpaltz.edu under student organizations.