There is a post in the stickys section that will show you exactly what to do by a proffesional car technician (The Doc is his username). He did a install a while ago that came out very clean and neat. Take a look there. Maybe that will give you an indication of how it will look? The bluetooth kit he used is rather simple with just a small mic in the top right hand side of the windscreen and then a small receiver that you can stick in the ashtray etc...
Hope that helps
Fully intend to use that 'how to' to setup my nokia bluetooth kit

I was thinking more about location for mounting the phone. Anyway, since my post I have bought a Brodit Proclip and a holder for my phone which I am hoping will look really neat and tidy (I intend to modify it slightly from standard) will post some pics when its done.
Incidentally there is a guy on ebay selling the official Brodit Proclip for the golf 04-07 for £5 inc postage! Bargain!!
I will then tackle the bluetooth install once I am happy with the phone location etc.
One for the doc possibly - with the Ck-7w can you still use the phone as opposed to the wheel thingy to call contact etc?? I really want to hide the wheel thingy from view and not use it as I already have the Harman Kardon wheel mounted for my ipod and I think it will look OTT.