OK let me rest all your souls to peace, starting with Pratham
@PrathamTawde
I got 2 DVI-to-VGA converter dongle with my GPU,7600GT. If you have already got 'em that's fine,otherwise in the market it'll cost around 50-100 bucks. For VGA cable I bought a standard VGA cord,2m in length for 150 bucks from Nehru Place(I do most of my PC shopping there). I've got a spare DVI-to-VGA dongle, if you want it just PM me. As far as Audio is concerned,don't you have speakers? If you do want Audio output too, to be delivered by your LCD's speakers use a 3.5mm male-to-male cable. Check the Owner's Instruction manual given with the TV or you can find your TV's manual here: *www.retrevo.com/samples/Samsung-TV-manuals.html
Also below are the links for:
Back Panel connection-
*i15.photobucket.com/albums/a359/zoossh/TV.jpg
3.5mm male-to-male Cable-
*www.daydeal.com/files/images5/3-5mm_mtomcable.jpg
I think this should solve all your troubles.
Now to you s18000rpm!
Tell me, do you get audio too when you connect the screen and your laptop using HDMI cable? In my Samsung LCD Tv's manual it is written that "Do not attempt to connect the HDMI/DVI connector to PC or Laptop Graphics card as this will result in a blank screen being displayed".
Finally the ace
In case of CRT's, the max res. one gets is 1024x768(I tried it too). If you are using the S-Video to RCA conveter pins and want to connect the TV to the laptop then first you'll need 3 individual RCA male-to-male pins as generally the S-Video to RCA conveter has S-Video male type and 3 RCA(Red,Green,Blue) female type.This is the case if you are talking about this type of conveter:*farm1.static.flickr.com/150/416413961_3592ddbc05.jpg?v=0
If your cable is of this type:*img.alibaba.com/photo/205216880/7_Pin_S_Video_to_RCA_AC_Cable_Adapter_Converter.jpg
then all you gotta do is get youself single RCA male-to-male pin and connect it in AV Input's Video In, Simple
As always I'm here to help and answer your queries.