https://store.bimmernav.com/blogs/how-to-guides/how-to-operate-bmw-mkiv-navigation-destinations
Both Regular searching of destinations and Destination+ are available via the GPS-Navigation menu of the BMW MKIV navigation computer. Think of the nav display as a computer monitor and the Navigation computer as a desktop computer. The computer runs software built in side for the operating system shown on the display and updated “information” is contained on the CDROM or DVDROM disk.
MG ZT info mods and maintenance 