Great tips, Tricia! Developing a system for business cards is definitely key. I do the same thing as @AndreaZimmerman - keeping my business cards in my badge holder. I keep the cards I receive from others in a pocket - separate from my own business cards. I also tend to write on the back a note about the person so I have something to jog my memory later.

Another tip - make sure you go to at least one of the social events. They're a great way to network - everyone there has something automatically in common! If you're extremely introverted and would feel outside your comfort zone, think up a few introductory questions prior to going. Simply asking someone how they're using SAS can lead to a very informative discussion. You never know who you might meet. The people you meet could transform the path of your career, so make the most of the opportunity.