How can I make an iPad slideshow for a friend, without having an iPad?

I'm on a MacBook Pro, 10.5.8 old school stuff these days, I'm sure. The point is, I don't have any fancy new apps or an iPad.

A friend has an iPad 2, I think (the newest kind) and I wanted to make them a slideshow (or a couple). What would be the easiest way of doing this—using Keynote, or just stuffing the pictures into a folder in numerical order and zipping it?

Also, I want to resize all the images so they appear full screen right off the bat. The info I found on Apple's website is:

1024 x 768

132 pixels/inch

Does this sound about right? Thanks so much!