I never actually use writable DVD's for anything but in the next couple of weeks I need to burn some big ones. First question: Is my 17" MBP a Dual Layer drive, and if it is do I need some special software to write (data) to it? As you may be able to tell I don't have the Dual Layer media yet to experiment with. In fact I've only bought some writable (single layer) DVD-RW's today and planned to be fiddling about with them later but just wanted to be sure.