First, connect your system to the projector and double-check you will extend the display to the projector.
And thats pretty much it!
To test presenter view you should probably be connected to a projector or a secondary monitor.
How to Master Your Presentations Using Presenter View in PowerPoint
In PowerPoint 2007 and 2010 there is a little feature called Presenter View that could help you get rid of your printed notes and track better your time when presenting.
