I have a 2000 W plate XK8 with the factory Sat Nav and want to upgrade the disc from GBR to Western Europe. I am told that I need to go to the Navteq website - although if I follow the links, the discs available are described as being appropriate for 2007 cars onwards. Can anyone let me know whether the 2007 disc still works with the old 2000 technology? Is the technology for x type / s type interchangeable with an XK8? Anyone know the right Jaguar / Denso part number? Where is the best place to purchase the upgrade disc? Thanks in advance for any help received. Regards. Andrew