I'm preparing a one-on-one Keynote (v2) presentation but would like to present the slides on my Nokia N800 which has a 800x480 screen. To do this, I have to save each slide as an image. I've tried exporting a keynote slide to jpg and it exported it in 1024x768. My presentation is about 50 slides and would not like to edit and crop each one. Is there an easier/faster way? Is there a special setting on Keynote somewhere to adjust the default size of the theme / screen? TIA.