The very first thing to do is to create a locale file using copylocale utility. e.g.
copylocale en_US zh_CN
More detail can be found in http://www.herrodius.com/blog/123 and here is a copy from there:
– open a command line (run as administrator in Vista!)
– go to the “bin” folder in your Flex SDK installation folder
– run the copylocale.exe tool for each locale, this will copy the localized framework files from one locale to another (copylocale en_US nl_BE)
– check FLEX_HOME\frameworks\locale to see if the folder for your new locale has been created
