I have met thousands of men and women for the first time on countless business occasion. Whom I've remembered is a pretty short list. To a person whom I remember are the individuals that looked me in the eye as we spoke -- they were focused on me. Even more importantly, they made me feel like I was the most important person in the room in that moment.
A simple thing like eye contact made all the difference.
If you can develop this one skill, looking people in the eye as you speak, you will be amazed at how quickly you gain new friends and business allies.