How To: Uninstall Weather Watcher Live

Hello, I really need to uninstall this as you do not have my country (Cape Verde). I am using a Mac. Can you please give me instructions. At the moment every time I open Firefox the window pops up and I just want to stop it. thanks

Please see the following link for information on removing Firefox extensions:

http://support.mozilla.com/en-US/kb/uninstalling+add-ons