I think these questions are so specific to your campus, I would suggest contacting the student life office and getting some advice from them. Once you're on campus, I'm sure you'll pick up even more information about the process. Good luck!!
As a general piece of advice about winter recruitment on a small campus, I would make sure you make a good impression first semester. Sorority members will be checking out the freshmen women during the fall. Many impressions will be formed before the actual recruitment week. Be friendly to sorority members, make a good impression in your classes, join a club or two in areas that interest you, earn good grades, etc.