As said above, contact your local Alumnae Panhellenic. Most of the times, the APH's website will list the groups that are active in that chapter (very often an APH does not have all 26 groups represented). If PSS isn't listed, look around at websites of other APH chapters nearby for one that they are participating in. Or look at the APH near your school (if your school & hometown are far apart).
I hope this made sense, PM me if you're confused
