Laptop to tv via s-out - plz help?

Im trying to get my laptop to show on my tv screen via s-out its only a few weeks old and when i connect it to my projector the same wat i get the picture on my projector, meaning there is a signal going through the s-out cable but i dont know what channel to turn the tv onto to get the laptop screen, iv tried av etc but no joy, somebody know?
Answer
Hi,you need to activate your s-video using your function keys combinations on your laptop keyboard. look at http://www.svideo.com/compaq1700.html for more details.hope this helps!regards,tonkpills.