BMW X5 2004 - Australian DVD update

[Fozzie]

Hi All,

I am the proud owner and driver of a late 2004 3.0d X5 Sport, which I think has a MKIV DVD Navigation system..

I am migrating to Australia and want to get an Australian DVD for my system..

Soes anyone out there know

if this is possible?
Where to get the DVDs from if it is ?
any thing else about this I should know

HELP!!
:yikes: