BMW Navigation System Software Upgrade, Different Computers
Information about the navigation displays and computers found in the BMW E38 7 series, E39 5 series, E46 3 series, and E53 X5 series. Andrew details how to upgrade the navigation computer software as well. The car in this video is a 2000 BMW E39 M5.
The MKIV Navigation computer is available for any BMW that has any of the older systems, MKI, MKII and MKIII. The 16:9 display can be added to any BMW as well, upgrading from the 4:3 display is plug-and-play.
Link that Andrew was looking at: http://www.xoutpost.com/articles/all-bmw/navigation/9458-bmw-navigation-system-faq.html