Alright Viper - I'll try to help you out here.
First, u gotta be confident. Think of a few things that you like about yourself and roll with it. You need to have confidence, or else absolutely nothing will happen. You know that guy who's trying to "steal" Tina? You have to convince yourself that you are better than him. You must know WHY you are better for Tina than he is.
Confidence also includes being assertive. Don' tlet anyone push you around (don't get into a fight either). You do what YOU want - not what someone else demands you to do (in school). The guys here usually give pretty good advice, you just need to show that you're at least trying to do something with it. If you only post repeatedly with no apparent progress, no one will think highly of you. C=F (as I think I mentioned at hte end of this post as well) is important - it loosens the tension and lets the conversation flow much more smoothly. The girl will also become more interested in you. But again, confidence and assertiveness are key.
Next, when making an approach, have 1-2 topics in mind already. Not dialouges, just simple topics. Are you in a class with her? Do you guys participate in te same sport (like swimming or track)? Just try to come up with a few things you and the girl have in common. When you two are talking, put a topic you had in mind in play. See how that goes. Chances are, you can have a pretty good conversation if you believe in yourself and are confident
After that (or before), observe and listen. Your eyes and ears are arguably your biggest assets. See what she likes, see what she dislikes, see who she hangs out with, etc (even look into her eyes if you are able to) and lsiten to what she says. Sometimes, observing is better than talking, although you will have to talk at some point if you want anything to happen.
Finally, you must have a goal in mind and not be afraid to take some risks. Do you want to just talk to her? Do you want to ask her out? etc. Regarding risks, I feel you must take some (in general) to really advance.
Now, you might ask "Hey, exactly how much success have you had?" Well, I've never had a gf (I know, it's sad), but I feel I have very much improved since coming here. October 16, 2004 was my turning momemt. It was hte Homecoming Dance. At hte dance, I was stiff as a board due to extreme nervousness. There's a lot more to it, but after that horrible experience, I vowed to improve. Again, I also feel C + F is very important, as it makes conversations flow a lot more smoothly.
Good luck man!
TCK