My $0.02:

1. Don't be sycophantic, especially if she's hot. Be polite and charming, but have some respect for yourself.

2. Be confident. Don't doubt yourself, or talk yourself down. Avoid negativity overall (at least in the initial stages). Don't bignote yourself too much either. This comes across very badly.

3. Accurately gauge what is appropriate behaviour for a particular woman. Some guys can get away with inappropriate behaviour and language, but most chicks will add it straight to their sleaze files.

4. Put some effort into the way you look. For some reason, they respect this.

5. Identify what is interesting to her. Don't bend her ear with crap.

6. Be as genuine as possible. Lies usually get exposed at some point.