http://www.osmaustralia.org/garmin2kzoom.php
Don't know if anybody is interested, but I have created a custom set of
Garmin IMG files for use when mapping missing roads out in rural areas.
They have the zoom levels altered so all road types are visible at the
2km zoom level. The reason for these maps exist is because last weekend
I felt very smug with myself mapping some of the unmapped parts of the
Brisbane ranges (based on what I could see wasn't mapped on my GPS),
only to discover when I got home that it had already been done. It
turned out that my GPS did show those roads already mapped, but they
weren't visible until you zoomed in to 120m, and I had the GPS zoom set
to about 1.2km (which is far more useful a level when you are driving in
sparsely populated areas).
They can be downloaded if you are interested from
http://www.osmaustralia.org/garmin2kzoom.php
I've only tested them on a 60CSx - would be interested to see how they
fly on the other Garmins.
Cheers
Matt