Foreign salary income in itr2

Hi,

I have been working in Singapore since 19 Dec 2011.  Singapore financial year is calender year Jan to Dec. As per Singapore, I am tax resident here since its >183 days including both year. Also, In singapore I have to nil tax for year 2011. I will have to pay for 2012 income in next year. 

Is my tax payable in India for salary income in Singapore? if yes, how do I enter it in ITR? Also how to calculate tax for Jan 12 to March 2012 to avoid double tax?

Regards,

Amit