What cables do I need to buy? Any recommendations.

[emad]

Dear All,

If I want to connect the following

Plasma Pioneer 504
Amp Pioneer AX5i
DVD Pioneer 868
Sky+
XboX console

I know I will connect the 868 DVD to the plasma via HDMI cable and to the Amp via I-Link cable - but that's all I know.

How do I connect the sky+ and xbox? to the mediabox & Amp?
Which high quality cables do I need to buy?
Where do I buy from?
Do you recommend mains conditioners? If so which brand?

Any help is greatly appreciated

Emad