Trouble connecting MacBook to HDTV HELP!

I just bought a Belkin Mini DisplayPort to HDTV Cable. I want to connect my basic MacBook to my Samsung HDTV. I plugged in the HDMI side into the HDMI 1 port on the tv and I plugged in the other side to the mini displayport on my mac. My television does not recongize that there is an HDMI cord plugged in. When I go to sources and attempt to click on HDMI1 it says "This source is not connected. Please check cable again." Everything is properly plugged in and I've tried all 3 HDMI ports on my tv. I've also refreshed my tv to search for devices and nothing is detected.
Does anyone know a solution to my problem???
Is it an adaptor issue or is there a quick fix?
I've also tried to connect the cord to my roommates MacBook Pro and it still doesn't detect the HDMI cable.
Please Help!

RGB is component.
Composite is RCA audio plugs with a Yellow video plug or S-Video plug.
With what you have on the TV you can use a Mini-DVI to HDMI adapter and an HDMI cable to the TV. This will give you video but not audio because there's usually no audio plugs on most TVs to work with HDMI since it's expecting audio with the HDMI.
You'll need external speakers or an external stereo system to hear sound since the Mini-DVI to HDMI adapter only carries video not audio. Plug the external speakers or audio out cable to the external stereo system into the headphone jack on the MacBook.

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