Hooking up Wii to Home Theater System

I am trying to hook my nintendo wii up to my home theater system, but I'm not sure what cable I would need. I know the Wii doesn't have an HDMI output/input, and my TV doesn't have any inputs left because I have one for my PS3 and one for the theater itself. The only slots that are available on the Wii is the USB... show more I am trying to hook my nintendo wii up to my home theater system, but I'm not sure what cable I would need. I know the Wii doesn't have an HDMI output/input, and my TV doesn't have any inputs left because I have one for my PS3 and one for the theater itself. The only slots that are available on the Wii is the USB ports, and there are the blue/green/red slots on the back of my home theater system. So long story short, does anyone know how to go about hooking it up without HDMI. Thanks in advance.
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