Stand tall you're a soldier. Seriously posture and how you hold yourself is so important. Hold your head high, look slowly around the room. if you make eye contact, maintain and smile, then look away before it becomes a starting out contest. if you look happy and comfortable the woman will come to you. Find something that you can compliment on her that differentiates her from the other women. If you are both in big groups try and get her number quickly and move on. It's much easier to get to know a girl on a date than when out with the boys. good luck