Copio y pego para la traduccion. No parece tan dificil
To translate into your language proceed as follows:
Download the language source files above and extract them into a folder on your computer.
In Windows – avoid using Notepad, Word or Write at all cost. If using Windows, ONLY use a program called “Notepad++” to modify xml files. Notepad/Word will destroy the integrity of the XML file and will not build properly.
Download Notepad++ here:
http://notepad-plus-plus.org or use something like gedit in Linux.
Do not change the folder structure
The quickest way to start is to open each english .xml file and insert the translation, no spaces before or after the words.
Do not change the tag names (the bit inside the quotes like “contactsList” below)
Just change the highlighted items into your language as show in the examples below:
arrays.xml
<string-array name=”backup_dialog_content_type”>
<item>Wi-Fi Data</item>
<item>All Applications</item>
</string-array>
strings.xml
<string name=”contactsList”>Contacts</string>
Keep translations as short and concise as possible, long word(s) will not fit on buttons properly, causing alignment issues. Remenber no spaces before or after translations
When translation is finished put all the folders back in a zip or rar archive