[AChiOhSnap]

I recommend you look through the recruitment stories forum. There are literally hundreds and hundreds of different stories that describe recruitments at different schools. An introduction night, a philanthropy night, and a formal "pref party" -- often with desserts and/or mocktails are pretty standard, but often schools have different theme nights above and beyond those. I'd start w/the recruitment stories forum, and you can pick and choose what works with your sorority and your campus.