Change the format of the slide show so that it is suitable for 35mm slides (select Ensure Fit in the dialog window that will appear).
Adjust the size of the slides to be suitable for printing on Overhead projectors.
Adjust the dimensions of the presentation so that it can be printed on Letter sized sheets of paper.
Change the orientation of the current presentation into portrait (select Ensure Fit in the dialog window that will appear).
Change the notes orientation of the current presentation into Landscape.