You'll also need audio cables to the TV using a 3.5mm stereo headphone jack to RCA sound plugs or a 3.5mm stereo input plug for audio with the Composite.
(Composite is the red, white and yellow RCA plugs on your TV or red, white and S-Video plugs.) Here's the various types of Mini-DVI adapters on i-dvi&x=9&y=13 You'll need a Mini-DVI adapter for the MacBook 4,1 and the iMac 8,1 and a cable from that to your TV. What cables do I need to purchase to do this?
I live in Chile and would like to watch movies from my MacBook to my JVC HD Television.