You plan to display your computer through a TV? Well, if that's the case, I think you need to find a VGA to composite cable then (if your TV is CRT or last generation TVs), but if it's LCD TV then you don't have to search for a VGA to composite cable cause most TVs nowadays have VGA input. Or rather, if your computer has an HD graphics card, does it have an HDMI output?
If it has, then just get an HDMI cable, connect to comp and straight to LCD TV.