Laguna stereo

[statts1976uk]

Hey all, I'm thinking about ripping out my bog standard head unit in my 55 plate Laguna but having never done it before can anyone recommend a good website to get the relevant cables and fascia. I'm not going for the chavvy "all I want is bass" thing but just an mp3/usb/ipod head unit is fine but I need advice as I want to keep the remote control on the steering wheel working. I'm sure one of you guys out there has replaced theirs and can pass on a few words of wisdom.

Cheers all