New York Road Runners uses a lottery system for entries into the marathon, but there are some exceptions where entry is guaranteed. One way is to meet certain qualifying time standards for a half marathon or full marathon, another way is to be a member of New York Road Runners (NYRR) and run 9 qualifying races throughout the year (and in addition for 2009 guaranteed entry, you must volunteer for at least one race) - of course, this is generally only possible if you live in the New York area, another way is to run for a charity program, and the last way is through an international tour group. It is my understanding that for the lottery, the percentage of applicants accepted from the New York area is lower than for other areas. Hope this information helps, and good luck!