You need to connect all you component via a digital connection, either digital co-ax or optical.
Here are examples, and the best place to buy the cables:
Digital Co-ax, AKA SPIDF:
http://www.monoprice.com/products/su...02&cp_id=10236
Optical, AKA toslink:
http://www.monoprice.com/products/su...02&cp_id=10229
The only way to get the best sound by hooking everything up to your TV is if your TV has digital audio inputs, and a digital output.
Your manual should detail the connections needed, so start with the manual.
Listen to the Real HT Info Podcast at
http://realht.info, or on iTunes.
Also, listen right here on The Home Theater Shack. Just use the web applet on the front page.