Hello, I just got AVIA and calibrated the volume of the speakers, but I was wondering about the positioning of the rear surrounds. I have read that they should be 2-3 feet above the ear level and firing straight across each other. Although I have also read some people have found that they get better sound bouncing the sound off walls etc.. Is there any particular DVD which would allow me to "play" with the direction of my rear surrounds to determine which gives the best sound field for my room? Alot of the DVD's I've watched don't seem to have alot of rear speaker action so it's hard to judge which position is the best. Any suggestions appreciated.