You should totally check out friendster.com (same idea as myspace). You can find people with similar interests, message them, and maybe find someone cool on there?
Also my roommate goes to Starbucks to do work a lot. Somehow, she has met so many people there that she hangs out with now. She has other friends, but she goes alone and I guess people just strike up conversations with her? I dunno, but it works for her and she doesn't even try!
When you get a job, that'll be a great way to make friends too. I used to work in retail when I was in school and we always went out after work. Restuarants are also really social places where you can meet new people. Lifeguarding is another great job for meeting people!
This is kinda random, but I had a friend moving out here last year and he asked me to check out some places that he found on craigslist so he had a place to move into. Well I still talk to the guys in 3 of the houses and hang out with them. So if you're house hunting right now then that's a great way to meet people plus new roomies hand other friends that you can become friends with!
Just remember that you are an cool, fun person. It's intimidating to meet new people, but they are just as nervous as you are. You are a really pretty girl and people may just be intimidated by you even though you are actually super nice because they might assume you are snobby! But most people are always looking for new friends. Just make sure that you look open and friendly (make eye contact, smile a lot) and someone is bound to approach you!