Hi I was on F1 visa last year(2010). I went to school in GA. But did a summer internship in IL for 3 months(CPT). I also had a student job while I was at the university. So I have both GA and IL state tax withheld. I filed 1040NREZ and got my federal tax return for 2010. I have still not done any state return. Can I still file state tax returns. If so,which forms do I use. Will I get any return on the 3% IL income tax that has been withheld?Please help.Thanks.

Redundant question already answered on the other post.