It depends on the ports you have on your computer and on your TV. Check what kinds you have on your laptop.
The four main types are (in increasing quality):
1. S-Video [2 types: 4Pin as in picture|7Pin]
Port:
http://www.coloredhome.com/video/s-video…
Cord:
http://akamaipix.crutchfield.com/graphic…
2. VGA
Port:
http://upload.wikimedia.org/wikipedia/co…
Cord:
http://www.thisishowyoudoit.com/blogimag…
3. DVI
Port:
http://vocaro.com/trevor/blog/wp-content…
Cord:
http://auctioninvestor.com/shop/images/d…
4. HDMI - also transfers sound signal
Port:
http://media.bestofmicro.com/,2-3-49323-…
Cord:
http://www.k1cable.com/images/hdmi_000.j…
All of these do the same thing: The laptop sends the video information through the Port and the Cord. Your TV Recieves that information in its port. Numbers 1 to 3 do not transfer sound, so you will need a separate adapter for your headphone to TV Audio. #4 HDMI transfers both sound and audio data, so you won't need a separate cable for sound.
Check if your TV has corresponding ports. If not, you can buy additional adapters. This is an example of a VGA to RCA(Red/White/Yellow analog cables) and S-Video
http://www.gainbery.com/Product/Adaptor/…
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A tip: try to avoid S-video. The quality isn't quite as clear as the others. I tried it on a few TVs already, and I could not read small text well on the TV screen. Try to use a VGA to RCA adapter at the very least.
Just plug them in, go to your video settings and set your computer to allow the TV as a secondary screen, and tune your TV to the right video channel.
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ATTENTION ATTENTION ATTENTION
The above is for PC. If you have a Mac, you may need to add one more step: that is the MINI-DVI port. (One of these:
http://www.screencapturenews.com/wp-cont… )
You can buy it at your local electronics store. You just need to find the appropriate adapter, whether it is M-DVI to VGA, DVI, HDMI, etc. (For Example: M-DVI to VGA
http://www.tvcables.co.uk/images/items/m… )The only thing is, the MINI-DVI does not transfer sound for HDMI, so you will need a separate cable for that.