To be honest I don't know .. but I'm guessing it's more then what my computer is capable of doing
You need a pctv card in your computer. This allows you to receive the tv feed in a window on your pc screen.
You also need capture software. There are some freeware and some pay programs available. Do a Google search on screen capture software.
You need web space. Probably, your ISP allows you some web space. There are also inexpensive web hosting companies that sell web space. Again, Google on web hosting.
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Once you have the pctv card, screencap software, and webspace, you take a screen cap, send it to the webspace and link the image to the FR post.
That is roughtly the technique.