So I have a Macbook and Powerpoint for Mac. I need to do a presentation for school which is on powerpoint. At my school they only have Windows computers. So if I do the presentation on my Macbook will it all be compatible with the school computer? The reason is that on some computers the Word document opens, and on some it doesn't at school. If it doesn't work, is there a usb connector or something which you can put the screen projector wire into (I don't know the name of it, you know where it's got all those dotty things in and the two things that screw in the sides (bad description I know, but there usually blue?) So then I could just plug my Macbook in and then put it straight onto the screen. Thanks to anyone who can help me!