The ducting for the rear vents in the armrest is a pain. It only costs about £4 from the dealers to get the bit, but you need to get the bottom of the console off, and the sides around the tunnel to fit the duct to the heating distribution box. I decided if my occaisonal rear seat passengers were that bothered, they could pay for it to be fitted by VW.
Ipod connector- try vw vortex, I am sure I remember seeing instructions on there.