|Model of Laptop? "No Sound" S-video doesn't carry sound, only video. You'd need a cable like this:|
1-3.5 mm Plug to 2-RCA Plugs
There's your sound. As for the picture, are you cloning your TV with your laptop? Is so, make your TV the primary and extend your TV to your laptop. You may have a "Swap Display" button depending on your video card. Or, disable your laptop video and make the TV the primary and only video displaying.
AMD64 X2 4200 @2.5Ghz
Corsair 3Gig Dual-Channel 2x512 2x1gig
MSI Radeon x800 PCI-E
Seagate 160Gig SATA
Seagate 320Gig SATA