The only reason I bought this thing was to show a slide show presentation. I have it saved on my old hp laptop in microsoft office and on the hp desktop. I bought the keynote app. I've been reading and trying to make this work all day. It should be simple but it's not. Does anyone have any suggestions? help please and thanks in advance. When I open keynote on the ipad and try to copy from itunes, I see the presentation but it is not clickable.

Keynote and power point are two incompatible presentation formats. You'll have to entirely redo the presentation in Keynote. And by the way you may not be happy with presenting from the ipad because the slides only show up on the monitor, not the iPad too.