International Versions of MyApp

I am having trouble with installations of MyApp in non-English speaking regions. These installations were built with SF8 or earlier where I did not take advantage of the Language feature. I intend to do so with SF9.

The on-line users manual for SF9 speaks mainly about an alternative language for displays and text messages. It says nothing about automatically selecting a region for differences in number, date and currency format. Does Setup Factory address this aspect at all.

How have other developers handled this.