Questions about using the post 9/11 GI Bill...?

I am currently using the MGIB to attend school and have been for 2 1/2 years. I realize my MGIB benefits will expire in a little longer than a year and am looking at my options. I was curious if anyone knew if I would be able to use the post 9/11 gi bill. I served in the army active duty from 1999-2005 giving me the three years required after 9/11 for full benefits. However, about the time the post 9/11 gi bill kicks in (aug. 1st, 2009) will be about the time my current MGIB expires. Does anyone know if I will be able to use the post 9/11 gi bill? Thanks for your help! Devin