Hi guys!
Thanks so much for all of the advice, it was exactly what I was needing -- don't stop if you have more to say, though!
I'm willing to put the work into it, but the problem might be getting the school's support. We have one "fraternity" - Sigma Alpha Iota for the music people, and we have Greek honor societies, so they might be into it, but I'd have to present the idea to them in a way that makes it seem like a lot more than a social thing. Any ideas for that?
I can't really decide what I ought to do, though. I thought it would really be awesome to be Alpha Sigma Chi, since that's our school's initials, but I don't know.
Our Student Activities Director recently left, and we don't have a new one yet. So it might be a while before I can talk to whomever ends up in the spot. Bit of a problem.

But yeah....anything else you can tell me that tries to address my other issues?
(Oh, and I've barely looked at http://www.npcwomen.org...I've just got friends "in the know." It seriously helps when you're trying to do things like this! I wrote a spoof article about our entire school becoming a sorority -- fat chance, I know -- but they were an invaluable resource for that, too.)