In order to transfer a Keynote presentation from my IPad to my pc laptop I've been trying to share via email or itunes as a Powerpoint. As a Keynote file it makes the transfer but of course the Keynote file won't run on the pc. Trying to save it as a PowerPoint the file closes halfway through sending to itunes and takes me back to the desktop. The same thing happens if I try the same thing using email. In desperation I've downloaded Dropbox. But I can't see any way of transferring the file from the IPad to the pc with this and it would only be any good if it was converted to a PowerPoint file so that the pc can be plugged in to the projector. Please can someone help?