[Orgmode] Using shift and arrow keys to select lines in Aquamacs (in org-mode)

[Saptarshi Guha]

Hello,
I know shift and arrow keys are used by org-mode. But is there a way
to remap them to selecting the line(as in Aquamacs text mode)
 (e.g shift+down highlights the current line, shift+up highlights the
previous line etc).

I guess this has been asked before, but I could not find the thread .
I would be grateful if someone could direct me to the solution.

Much thanks
Saptarshi