Problem in Arduino IDE

Hello guis! I am new to the world of I have installed IDE version Arduino 1.0.5-R2-widows. I want to use it for Arduino DUE.
But problem is that under the menu " Tools | Board |......" I am not getting the board name DUE to select.
Can any body help?

The Due and Yun are the new boards, and there are more new boards coming soon.
The Arduino IDE 1.0.5 is stable, but it doesn't support the Due yet.
Use the Arduino IDE 1.5.7 BETA.

Thanks a lot!
Arduino IDE 1.5.7 BETA worked for selection of DUE board. But for uploading my test program via DUE's programming port I get error " No device on com port" even though windows 7 device manager shows detection of 'Arduino DUE programming port ' on com port.