How can I watch internet TV on my flat screen TV

Hook your computer to your TV with jacks
It will basically turn your TV into a computer screen
Radio shack sells them

You need HDMI-out on your video card and HDMI-in on your TV. Then you need the websites.

You can use VGA, DVI or HDMI depending on what your computer can handle. It should match to what you have on the back of your monitor/LCD/Plasma TV. Then select the input it should be usually the PC input. Then navigate to justintv