Laptop to TV
For video, use a VGA, DVI, or HDMI output from the laptop to an input on the TV. If you TV doesn't have a VGA input, you can get an adapter to go from VGA to component video. You can also use DVI to HDMI cable if you have a DVI video output.
You have to use a function key, usually Function F8 to enable the video output.
For audio, you can use the headphone output and an adapter to allow for the red/white analog audio connection to the TV or your receiver. My laptop also has a digital coax audio output which I can connect to the receiver.