Check on following sites for the free tax return:

Federal: http://www.irs.gov/efile/article/0,,id=118986,00.html (income is $57,000 or less in 2009).

Colorado: https://www.netfile.state.co.us/file2009/Welcome.jsp2 (Colorado NetFile)

Colorado VITA: http://www.coloradovita.org (income of $49,000 or less)