You will need to edit the languagepal.php file for each language and place it in the related .threads language file then modify the index page to call the language from there. I threw 5.+ IIP together from parts of stuff I had laying around in different stanges of the current version I'm working on.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.