How to fix $ amounts so they display correctly

[apollo3160]

Prices throughout VM are showing like  14,56 $.

This is INCORRECT in Australia, it should look like $14.56

Notice it's a decimal not a comma and the $ sign is right at the beginning.

How can this be fixed?

[jenkinhill]

http://docs.virtuemart.net/manual/21-configuration-menu/68-edit-currency.html