Do you want to use a Portuguese Firefox version (i.e. the user interface is Portuguese)? You can install additional language packs. * http://kb.mozillazine.org/Language_packs Firefox Win32 language packs: * http://releases.mozilla.org/pub/mozilla.org/firefox/releases/latest/win32/xpi/ * Locale Switcher: https://addons.mozilla.org/firefox/addon/locale-switcher/ ---- See: *http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows *http://kb.mozillazine.org/Shortcut_to_a_specific_profile *http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox You can use the -no-remote command line switch to open another Firefox instance with its own profile and run multiple Firefox instances simultaneously. *http://kb.mozillazine.org/Opening_a_new_instance_of_Firefox_with_another_profile *https://developer.mozilla.org/en/Mozilla/Multiple_Firefox_Profiles

Actually i have firefox in french, what i was talking about was using pale moon as its own seperate browser

You can create a new profile for pale moon the same way as you can do this with Firefox