I guess that's ok. I'd just look at her (make sure you make calm, casual eye contact and don't smile.... no looking at the ground, and no forcing yourself to stare at her for prolonged, creepy periods... seriously) and say, "Hey, what's your name?" Then, "My name's <whatever your name is>. I think I've seen you around here a couple of times." Blah, blah, blah... hopefully she'll open up a little and if not just say, "Well it was nice to meet ya. Later." And remember... don't smile. I'm serious. Don't be creepy and mean, but just don't give that instinctual geek grin that so many dudes give women. Anyway, good luck.