yeah, ok... so I had "Bitchin' Camaro" running through my head when I first saw it, but you know... to each his own.
But the question is a similar one and a lot of people have thrown in on it...
After the, "hi"? I dunno - depends on where you are. It can really be as simple as "I saw you walk by and couldn't help notice you... would you like to go for coffee?" Or dinner, or a drink, whatever... kinda depends on my take on her appearance and what she might be into. Really, it doesn't matter - if she likes you, it's not gonna matter much where you are. SO you meet up and just talk. Sometimes, it'll be really awkward and the conversation won't go anywhere... no chemistry. Oh well. Sometimes, you get kicked out of the restaurant because everyone wants to go home. Ask that one to go out again.
The big thing is to just do it. Yeah, you'll feel like a tool sometimes, but everyone goes through that. It's not the end of the world and the more you do it, the more comfortable you'll be doing it. The single biggest benefit you'll get from it is losing a lot of your fear of talking to someone you don't know... it won't matter with most of them but when a girl walks in the room that really flips you, you'll be SO glad you weren't paralyzed by that fear.