I will soon be working mroe frequently with Microsoft's Powerpoint software, and I began to wonder about the possibilities of using Keynote instead. I have never really used either software, other than keynote a few times at the apple store, and it seems simple and easy enough to use. My question is whether or not Keynote can open powerpoint presentations, and vise versa. Also is there any said benefet to either one? I know quartx extreme lets you do some cool stuff visually, and I would assume Keynote takes advantage of this, does Powerpoint as well, and on the same level? Any input is much appreciated.