Since you are being really vague on the details, I will try to think of many possibilities.
If your TV has a VGA input and your laptop has a VGA output, all you will need is a male to male VGA cord.
If your TV has a HDMI input and your laptop has a HDMI output, all you need is an HDMI cord.
If your TV has a DVI input and your laptop has an HDMI output, then all you need is an HDMI to DVI cord.
There are all sorts of possibilities, however, since you failed to specify your connections, I'm not going to waste my time to continue the list. Just see what connections you have, and see what cords are available to use them. Research is the answer.