Well, be nice to her, and if your parents set you up or whatever, go along and make sure that both of you are enjoying yourselves. But don't tell her the first time you see her that you don't want anything to do with her, it will hurt her feelings. If, over time it goes farther than you want it to, you can talk to her gently about it. But give it a chance and just try to have fun as friends first, instead of worrying about the 'dating' bit.