Allow your audience to see you point, the images that you can bring to the table with stay with your audience longer. If you must have data for them to use, print it out and give it to them.
Here is a great link to explain the role of the visual in helping out a presentation. Copy and Paste into your address bar.
http://presentationzen.blogs.com/presentationzen/2005/09/whats_good_powe.ht...Notebook: Identify three concepts you are going to want to represent visually. What images might work?