I have the right connector cables (dvi to hdmi - hdmi to tv) and I see my empty desktop screen picture on the my television. But I see no "dock" and no file folders on the tv and when I connect to Safari when I see on my computer does not show up on the tv screen. I want to be able to show streaming media from a conference onto my tv. I have a quite new Vizio tv and my mac is only a y ear old and has Snow Leopard 10.5.8. What's the missing step?