its the VGA interface gives you the desired quality on your LCD tv, superior Quality is attained by using the HDMI interface. new laptops come with HDMI but i dont assume you have a HDMI but only S video. S video is intended to connect the CRT tvs earlier, so for a decent quality VGA interface is the solution.
yesterday in Sofitel shopping i happen to come across a cable with VGA one end (to LCD tv) and the other ends is S video (to your computer). try that cable, its only 20 or 30 i guess. all the best.