I reckon I get a mail like this every day - developers who are interested in using the Microsoft mapping technology.
I send out the same information every time.
It goes a little like this:
Dear [insert name here]
Thanks for you interest in Mappoint/Virtual Earth. It is really cool isn't it?
The Mappoint business is managed out of the UK.
There is no local Australia support for the business.
You need to deal with the Sales team based on the other side of the world.
I know that doesn't make sense, but it's the way that it is.
Some online resources regarding Mappoint / Virtual Earth
There is also a vibrant community site - http://www.viavirtualearth.com/ - which is run out of Sydney by a bunch of passionate mapping dudes. It's a good place to go and get hints, tips and learn from the experts
Good luck and Godspeed
Everytime I send that email, I am sure a kitten dies somewhere in the world.