Sat Nav DVD/CD for pre-widescreen BMW sat nav

[oktapod]

The car I've just bought has the pre-widescreen satnav system (the one with the 5:4 ratio screen which also has built in TV tuner).

Does anyone know what part numbers for sat nav cd/dvd updates? Or links to compatible ones on EBay?

[oktapod]

Anyone able to help? I think I'm looking for Navteq disc T1000-13577, which is 2008 (and the last update available for the Mk2 5:4 sat nav).

Anyone got a spare?