If your laptop has a HDMI or DVI out those are your best options as they are digital. If not VGA/S-video will have to do with VGA being the better of the two. You can use various cables/adapters depending on the inputs of your TV.
DIGITAL:
HDMI
DVI
Analogue
S-video
Scart
VGA
Composite
component
Usually you can get adapters that will go from one Digital format to another or from one analogue format to another. You can also get a VGA to DVI or vica versa.
Choose the best output you have on your laptop then connect this to your TV without any adapters/format changes if possible, if not have it convert to the best input your TV has.
What connections do you have on your TV?
Preferred order for Digital output from your laptop
HDMI
DVI
S-video
composite
Scart
From Analgue laptop output
VGA
Component (rare)
S-video
composite
Scart
In most cases you could probably hook up an s-video to s-video cable for the picture and hi-fi audio cables for the sound.
If you can get a photo or description of the connections on your laptop and TV I can give you links to the best cables/adapters to use.