I am working on OPT since August 2009. Last year I field my Federal Tax return using the Form 1040A. Should I file 1040X along with the 1040 NR-EZ for the year 2009?

When did you enter U.S. on F-1?
Did you file your 2009 tax return?

No I didn't file my 2009 tax return yet. I came to US in Aug 2007 on F-1.I filed 2008 taxes with the 1040A. Also during this whole period I have left US only once for 2 weeks.(If this matters ;-)).
Should I file 1040X along with the 1040 NR-EZ for the year 2009? Thanks