Ok, I admit, my geometry skills are escaping me now..... How do I calculate the effective 4:3 area on a widescreen TV (i.e., if I were to be watching TV material without stretching or zooming)? When the time comes to replace my 27inch sony, I would like to get a 30 or 34 inch widescreen. I am worried that most of the 34s have speakers or other material on the side of the screen that would not allow me to fit it in my space. However, I could possibly cut some of the shelving to give more width for the 34. Also, when getting measurements for 16x9 TVs, are they being quoted on the diagonal or width?