I recommend you get your cables from
Monoprice.com. Good quality,
very reasonable prices.
Cables are a controversial issue. Some feel expensive exotic cables are worth it. Others, like me, feel that as long as the cable is well made, it will do the job. Only you can decide where your comfort level is.
The specific cables you'll need will depend on the inputs and outputs available on your equipment, and how you wish to connect everything.
Here is a tutorial explaining the various types of video and audio connections and their respective advantages and disadvantages.
How to connect your Home Theater
