Can someone help me change the language displayed in all the pull-down windows and messages that Firefox uses? I use a laptop at work that I've signed out, and everything displays in Thai. (I'm an American but I live and work in Thailand) If someone could guide me to changing the language back to good ol' English, I'd be most appreciative. Remember the windows are now in Thai, so you'd have to say ( for ex.) "Click on the Firefox orange tab in the upper left corner, go down to the 3rd entry, then go over to the right and go down to the 6th entry, etc.)
I know it would be tedious, but it would help me so much.
Thanks in advance.