Fellow speaker,
It can be tempting to want to turn your presentation over to the computer-projector and simply read everything that is on the slide to your audience. This makes it easy to present...and a very boring to the audience. Instead, take advantage of your stage time, keep the slide presentations to a minimum, and sell yourself. Let the audience get to know you (not Mr. or Ms. Powerpoint! ;-) ) is presenting the speech.
Presentably,
Tim