Quick little code post here.. took me a while to work out how to do this, it's always the smallest things as they say.
stage.showDefaultContextMenu=false;
You can of course customize the menu, i'm yet to experiment with that but here's a useful tute about the method, straight from drawlogic.com
Article Link
http://drawlogic.com/2007/06/12/howto-using-the-contextmenu-in-as3-with-fullscreen-mode-as-a-sample/











