As stated, file FAFSA when you have your 2010 Tax retirn completed. You can complete the FAFSA with 2009 return and update it later but thats just another step and a hassle. Be sure to include all schools you anticipate having a shot at. Even if you hadn't heard back at the time of completing the FAFSA. Worst case scenario is you don't get in and the FA office at the school will throw away your file for not getting admitted. That's better than not including the school originally and having to add later.