PSAT/NMSQT early graduate qualifications?

I took the PSAT this year and I just got my results back. I got a really good score and I want to know if i can qualify for the national merit scholarship. I am a sopre and I put that down on the test, but I also put that I am graduating in three years and in 2010. So I really don't know if the test I took this year qualifies me for the scholarship or not. Has anyone had the same situation? or can anyone find any information on the site about early graduates?