So I want to hook my computer up to an external monitor, a tv or my 52" Samsung. The Samsung has a VGA port, so no prob there. I also want a connector to use rca cables. Found this: VGA SVGA to S-Video 3 RCA

This will allow me to use a 20" tv in my view in the computer room. Now I bought a 50' SVGA cable m/f to reach to my 52" Samsung.

What I will also need is a splitter one vga to two vga, this will allow me to use my monitor and view on external tv, I think. But I don't think I can switch it, so I will be seeing same thing as monitor. In my editing program I can view on external monitor, which I want so I can see how things look on a tv. And the splitter won't let me switch the viewing, you get that? So I may need to get dual port vga installed on my computer then I guess. I probably also need f/f vga converters, which I can pick up easily.
I have a 9 pin serial port, but my computer maker said I can't use that for external monitor...why?
So any solutions folks?

Thanks