http://www.npcwomen.org/extension-info.aspx
ETA: The link is a start. We don't know the extent to which your campus is non-Greek. It could be non-Greek because it does not want Greek Life or the administration could be anti-Greek. Someone (not necessarily you) will have to dig around with the Student Life office or whatever your campus has. The above link may assist with a step-by-step or contact info.