02 August 2011
Not possible now as the due date was 31.03.2011 as menitoned by the expert above.
However u could contact your A. O. and file an application with CBDT u/s 119
See this link http://taxguru.in/income-tax-case-laws/does-the-central-board-of-direct-taxes-cbdt-have-the-power-under-section-1192b-to-condone-the-delay-in-filing-return-of-income.html
but yours have to be a case to make and allow condonation.