ok, so I'm new to all this, I've read the forums over a few times and I've read some of the books on offer, but every time I want to approach my mind goes blank.

Theres a HB7 that I see most morning's getting on the tube listening to headphones, how do I approach and initiaate a conversation with her, it's too hard, she's busy listening to music and on her way to work, what possible opening could I use without it sounding like a blatent pick up?

Any help on this specific situation would be good?

You know what i'll do? I go next to her, pull out a dollar place it behind her what ever just make it seem like if it hers and you just curious that it might belong to her, so you tap her on shoulder and say "is that dollar yours?"
talk to her neg her by telling her she is stealing this is why you need to be creative and do the one dollar pencil trick to make her laugh. Blah Blah go in for that you know a place real cheap that taste good like something to eat but don't invite her. That use could the dollar. This shit would work.sorry if i didn't explain well.

very easy answer

Ask what she is listenng to

Tell her you are bored and you wanna make a trade for the ride. trade anything that was keepin you bored.

If she agrees take her mp3 whatever and don't put it on fully. Talk to her with a little fluff talk then show her how interesting and clever you are make it simple but exciting. Then do some playful negs you wanna show that you diggin her now. When the ride is over don't ask her for her number just play it cool if you do she might just ask you for yours if she doesn't its all good. You will see her again, and trust me she will be waiting for you.

P.S. try to steal her music player that will be cute to her(maybe).

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Like power isn't made to be used!

many thanks for the advice.

Take soullarpower's suggestion. It has a lot of merit. And, if you are playing with her successfully, the "stealing" of the mp3 player would work very well.