Sorry you need the 2009 program installed to open it. BUT they no longer have 2009 for sale or download. They only have the last 3 years. And even if you find the 2009 CD somewhere you won't be able to update it or download any state program you might need.
Why do you need a 2009 return that's 16 years old? Where did you get the .tax2009 file? Even the IRS doesn't keep tax returns over 7 years old. You would have needed to save it as a pdf file to view it.
