Thats AFC BS carbani....Its really funny that there always has to be an edge, or an angle...I used to think like that, where every meeting has to have the perfect open, otherwise it wasn't worth it... If your friendly, upbeat, and can carry an interesting conversation, girls consider that unique. They get bombarded all day long by losers who use all the AFC tactics in the book...It funny that once your mindset moves from an internal to an external locus (i.e. you realize the purpose of your meeting is a chance for you to find out if she's an interesting person), thats it...
For the record, generally if its cold, I find that you don't want to show too much interest, your going more on showing curiosity...Use your eyes and body language, be conscous of hers and engage.....Someone wrote a great post on the "gut check," that feeling you get once you know its on....