Hi Eric, I'm not exactly sure what you want to change or translate. if you want to change the language of Firefox's interface, see: [[Use Firefox in another language]]. If you need to translate a web page, it doesn't look like [[Firefox Translation]] supports Norwegian yet. I use this add-on in you want to try it (it can use either Google or Yandex on the back end): https://addons.mozilla.org/firefox/addon/traduzir-paginas-web/ If there is something else you want to change, could you explain it in more detail?