|Those VGA to RCA adapters DO NOT work with your VGA port unless the VGA port has the appropriate TV Out circuitry connected to it. Many laptops DO NOT have that at the VGA port. |
If your laptop has a SVideo port, then it has TV Out capability - you can use a standard SVideo (4 pins, male) to RCA (female) adapter and a RCA to RCA cable (male on both ends), or if the TV has a SVideo port, you can use a standard SVideo cable, 4 pins, male on each end.
SVideo ports on laptops often have more than the standard 4 pin holes but the standard 4 pin SVideo cable works with the port.
"I have got Asus PRO50G series..."
Series? The Asus Support site lists only the PRO50GL .
There are lots of other PRO50xx models .
I downloaded the English manual for the PRO50GL from two different sources, but the pdf has a "bad decrypt dictionary" and the pdf will not display, so I don't know if your model has a SVideo port.
The laptop has to have TV Out capability - the video is processed via circuitry to conform to the relatively primitive and much older TV display standards - only one or a few resolutions, at a fixed 60Hz or 50Hz vertical refresh rate.
The display on the TV from the computer will NOT look as good as it does on the monitor.
If you have a newer TV that has a VGA input, connecting a VGA video cable (usually male on both ends) from your VGA port to the VGA port on the TV will yield you a result that is as good, or almost as good, as on the computer's monitor.