The first thing you're going to want to do is copy the "templates" folder and rename your copied folder to the two letter language code for your language. A list of these codes can be found here: http://www.loc.gov/s...nglish_list.php
Once you've created that folder, the next step is to open "app.php" and change the entry for languageName to your language name (Español, Deutch, Français etc.). Attached is a screenshot showing the relevant info for this step.At this point, your language will show up in X2CRM's language list. From here, you can manually change each entry in each file for your language, or you can go to the "Translation Manager" on the Admin tab in X2CRM. The Translation Manager will allow you to add entries for every term in every file, alert you of missing entries, and has built in Google Translate support should you need it for any reason.
After filling out the entries, you will be able to select the language in the Profile -> Settings tab, and the application's text will now be translated.