Had my X5 for 4 months now and loving it. Just upgraded my Nav OS to V27 - everything went ok. Now for my request for help. I have currently the BMW 2005 Nav CD in my system and I want to upgrade the Nav to allow UK postcode search and Traffic Avoidance. Looking through e-bay, I find all sorts of BMW Nav CDs and DVDs. Can anyone in the UK provide an idiots guide to what CD/DVD Disc I need to source? I have the Full Nav Pack with TV etc, and the car is an 04 X5 3.0 TDSport.

Thanks in Advance