There is more than one way in which to accomplish this

This depends on your laptop. There is more than one way in which to accomplish this. So you need to read your laptop manual or look at its ports (if you know the difference between various types) and determine what kind of video output port your laptop has available.

Then you need to sort out what available port types your LCD has. Does it have HDMI? Does it have DVI? Does it have VGA? Or does it only have s-video or composite? You need to know both ends of the equation.

The simplest method is HDMI to HDMI if both items have HDMI ports. This is common for your TV but not for your laptop. However, more and more laptops are starting to add HDMI ports on their computers. So you might have it. If that's the case, then bam, get an HDMI cable and you're done. You can carry both video and audio over HDMI.

If your laptop or TV only has s-video or composite then you might want give up now. These connections can only do SD resolutions. This just isn't going to look that great at all. Especially if the laptop has these but its an HDTV. Then it will look especially bad. If the laptop has these but the TV is a SD TV then it might be okay. In that case just get an s-video or composite cable (available anywhere they sell TVs and online at like Amazon or such).