SVGA to RCA cable TV not working

I have a Macbook and I bought SVGA to RCA cable that I connect to the adapter from my Macbook so I can try to use it with my TV. The SVGA to RCA cable prongs are green, red and blue and are designed for HDTV.
I am trying to connect the Macbook to a Sony Trinitron Wega model which is not HDTV but has the same color female plugs (green, red, blue) on the back of the TV, but I can't get the video to work. I can connect a sound cable from the Macbook to the TV and get the sound to work, but not the video with this cable (the reception is black and fuzzy with no trace of the computer).
Should I get another cable, say an SVGA to S Video which I also have on the back of my TV?
The front of the TV has the standard yellow, white and red female plugs, should I get a cable with those colors?
Sorry if I sound completely dense here, but I know nothing about this kind of stuff...

I have the Apple Mini DVI to Video adapter sold for the MacBook. The problem I am having is finding the right cable that goes from the Apple Mini DVI to Video adapter to the TV, a Sony Trinitron.
On the back of the Sony there are three sets of female plugs for component video (red, green and blue). There is also S-video on the back. On the front you have female plugs for composite video (red, yellow, and white).
I am learning about this stuff as I go along. I guess at this point, because I live in the middle of the Pacific and can't just run to the Radio Shack or a Genius Bar, I am at the mercy of what I know plus what I can learn on these discussion forums.
As I wait (weeks) for a recently ordered S-video cable that will go from the Apple Mini DVI to Video adapter to the TV, can someone tell me why the Macbook won't work with the component (red, blue, green) video plugs? Is there a setting that I need to make to the TV or the Macbook that would allow for this to work? Will the Macbook only work with composite/s-video? Does anyone have a Macbook that is working with component video?
Thanks!

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