does you tv have a vga port on it?
if not you can do a bit of DIY
http://www.idiots.org.uk/vga_rgb_scart/
or
http://www.amazon.co.uk/Hama-SCART-To-VGA-cable/dp/B0002W69MY
sorry, re-read you post, you can extend your screen to the tv and use the tv to display ur dvds and have ur laptop screen as normal so u can browse teh tinterwebs