They don't appreciate that much bluntness, George. o__o We're not assuming that this girl is totally desperate, are we?
Asking her to a coffee shop or a small, casual restaurant would be a much better option. But don't simply ask her out of the blue, either. Talk to her a bit first, and try to give the impression that you're someone who she'd enjoy hanging out with. People are attracted to those with calm self-confidence, but not blunt arrogance. Also, make sure to be a good listener, and not spend large amounts of time talking about yourself unless she's interested to hear it. Most importantly, don't ever lie about yourself or try to make yourself seem like you're someone you're not (unless you're hoping for a one night stand or something).
Obviously, I'm not an expert at dating girls, but I'd say that's some rather universal advice. I hope that it wasn't too obvious or anything. ^__^