What cable is required to connect an apple mac to a LCD TV?

Look at what output port you have. It could be DVI, Mini DVI, Micro DVI, or other. The Apple store website should help you decide. Then decide what connection to the TV you want. For RCA cables (like a playstation uses), Svideo or others, though those are the most common. I use a Mini-DVI (from my white Apple Macbook, though the new aluminum ones are MicroDVI) to RCA connector, then plug an RCA cable from the connector to my TV. This only handles the video. Sound is seperate, I use a cable that plugs into my headphones jack and outputs RCA. It may be a good idea to talk to someone at your local Apple store.