When I bought my new house, I wanted a surround sound system installed. I spent a long time diagramming the rooms so that I could determine the best way to position the speakers. The angles and positioning are key to getting the sound to resonate properly. When I couldn't be sure that I had the positions right, I went to a local audio/visual specialist. Then I created this site to help others learn how to decode the angles and directions for optimal audio from a surround sound system. I hope that this information helps you get the perfect sound from your new system.
Surrounding Yourself In Sound: Surround Sound Installation Tips