I own a new 13" MB and a Samsung 40" a550 LCD TV. i bought a Mini-port-to-DVI cable and a DVI-to-HDMI. I hooked the HDMI into the 2nd monitor HDMI-slot on the back of the TV and the Mini-port into the MB. I can only get the TV to display the "standard" Mac desktop background -the one thats the picture of outer-space (purple & blues). but i cant get anything to show up on the screen other that just that desktop background. nothing else shows up. Halp! TIA ! !