Basically hayyoot, the VGA/D-Sub (which name one might prefer) has atleast double the quality of S-video, and is more than 10 times easier to set up. Once you get the VGA-cable, this will be like a cakewalk.
As for the red/yellow/white-inputs, but green/blue/red cables; scrap that idea right away: as mentioned, the TV supports RCA-signals as input, however the red/green/blue-cableset delivers component video = Will not work, and if it does work, it will all be in monochrome. AND: the quality will be rubbish. Poor colors, bad resolution, yadda, yadda.
More or less all connections from laptop to TV requires another thing. As mentioned, you need audio as well. What you now want, is to look for a 3,5mm input jack on the TV (the very same type found on mp3-players and more or less on all music-devices). More and more TV's come with this jack. If your TV has a 3,5mm jack, then all you need is an extension-cable 3,5mm male to 3,5mm male, and connect the laptop's audio-out (aka line-out) port to the input-port of the TV. Audio is transferred this way.
If the TV lacks a 3,5mm jack for audio input, then consider buying a 3,5mm male to 2x (white and red) RCA males, and connect them to the TV in the appropiate jacks.
Personally, when connecting my laptop to my TV, all I do is plug the VGA-cable into my laptop (the screen adjusts itself) and the other end into the TV. I then change the TV-channel to "VGA-Input" (the input mode itself has atleast a hundred of different names, depending on the TV's brand). Finally, I connect a 3,5mm male to 3,5mm male - cable into my laptop's "line-out", and the other end into an input-jack on the very back of my TV. Viola, audio and video.
If there is an input-jack on the side of the TV, be careful, this is probably for headphones and is an output-jack, not an input.
Hopefully you'll know what to do once you get your hands on that VGA-cable
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