Magellan eXplorist: Any maps avaliable for Australia?

Hi there,

does anyone know if there's some maps available that cover Australia (all
states as a base map with rivers)? A topo map would be even better (max.
1000 MB in size).

I know that there's the Worldwide Basemap, but it is said to be pretty
inaccurate and not very detailed. And I didn't find any other map that is
compatible to the Magellan explorist. Is there a Topo 3D Australia
available?

I'd be glad if you could give me a quick answer. The purpose I need the maps
for is hiking in Australia, especially in the area around Darwin, but I'd
prefer a more "global" (i.e. all Australian) map that I can use for
different purposes.

I do have the eXplorist 600 with a European Basemap, though.

Thanks a lot.

Best regards,
Andy

Here you go:
http://www.gpsoz.com.au/magellan_mapping.htm

-Skramblr