Cannot chose arduino Due from Arduino Software

Hi,

I have the latest version of the Arduino Software (Arduino 1.6.5) and I cannot select "Arduino Due" from the Tools > Board menu to get myself started.

Does anyone have any advice to give me on this matter please?

Thank you!

You will need to install the support files for the Due via the Board Manager (under Tools > Boards).

Thank you very much! I appreciate the help!