Powerbook 12" to TV, take 10000.

Here's the deal. About 4-5 years ago, I had an iBook G3 12". The cable
i used to connect the iBook was a white cable with a 1/8" stereo jack on one end, which plugged into the iBook's earphone jack, and 3 color-coded jacks on the other end (RCA cables, I believe), which went into the corresponding color-coded ports on most TV's, VCR's, etc.
When I did that, it mirrored the laptop monitor but displayed DVD's extremely well.

Now I want to do the same thing with my PB 12", but that wire does not work. All I get is sound, but never any video, no matter what I try. I'm assuming that the earphone jack in the Powerbook does not send out some kind of video signal like the iBook did, so what kind of connector do I need? Is it something that will connect to the mini-dvi port instead?

Thanks.

 

Appreciate your answers. I have a rev. b G4 Powerbook 12" (1GHz). I'll have to double check, but I think it's mini-dvi...