Hi
I use these modules (from Apollo):
Menu (Page): PageLocalization
Module title: ModuleLocalization
Content: MLAdvAnnouncements
Flag selection: MLLanguageSelector
These modules can be added to a child-portal, after you install them as host. Installation just like other modules.
If you're using DNN 3.1.1 or later, you don't have to use core modification.
With the PageLocalization, I write the page title (menu). And rest of the modules the title is set in the module settings.
All the modules have a very good documentation, and the support from the Apollo site are great.
Have a nice day,
Ulrik M.