AA to CRNA

I am currently an RN with almost 1 year of ICU-stepdown experience. I am looking to apply and then start a graduate program in Fall of 2010, after I get a year of critical care experience. I am currently looking at Anesthesia Assistant (AA) programs and CRNA programs. My question is, if I get accepted into an AA program and decide to attend, does anyone know if I could do a completion program to become CRNA later?