i was the same way. luckily, i was in the honors program which allowed me to get a dorm where it was four girls to a suite but we each had our own room with a little common area. so i was able to have my privacy. i'd go into my room and close the door and they would leave me alone. they talked about me behind my back, but they didn't understand where i was coming from so it didn't matter.

if the college you are going to has that option, and if you qualify, then go for that. otherwise, the best thing to do is...if you know someone going to the college who needs a room, team up and get to know each other better. if you don't know someone that you can rope into it, and you already have a roommate assigned, talk to them and get to know them, maybe hang out before school starts. a lot of people become good friends with their college roomies.

and if that's completely out of the question, stay out of your room except to sleep at night. always clean up after yourself. make the room look like only your roommate stays there. this is mostly what i did, until i was finally able to talk to the girls in my suite.

good luck. i know how nerve-racking this sort of thing is.