S-video to TV--Help required

You must be connected to a TV for this to work:

Right-Click your Desktop | Properties
Click the 'Settings' Tab
Click the 'Advanced' Button
Click the 'Displays' Tab
Click the 'TV'

Look for the setting for color instead of b/w.

-----Original Message-----
I have a laptop which has a 7-pin s-video out. I'm
connecting this to my TV using a 4 pin S-video to RCA
cable (as I'm unable to find a a 7 pin s-video to RCA
cable). The problem is that I keep getting a back and
white image on the TV screen when I play movies on the
laptop. I'm using the dual montior setting to do this, is
there anything I can do to get a colour picture.
.