Ones you have your Xpages up and running and need to have it in many language then here is away to do it
This article will show how to localize your XPages applications into multiple languages, using translated .properties files for each XPage, Custom Control or Resource File.
The general process is as follows
1. Configure the list of supported locales in the Application Properties (Section 1).
2. Export your Source language (English) .properties and send them to the translators (Section 2).
3. Then import your translated .properties files for the listed locales using the steps below (Section 3).
4. Or for testing purposes, you can automatically create language versions of the files, until your real translations are available (Section 4).
Section 5 provides details of the extracted values. Section 6 is things to note.