Please TELL ME if this extension does not work on your version of Mozilla/FireFox.

Install: Install Add & Edit Cookies
Mirrors: Mozilla Update
"The Extension Mirror"
Mirror Italiano

FireFox: Profile Install. Uninstall using Extension Manager.
Mozilla: Choose either Profile or Global install. Uninstall instructions are available under Options.
Mozilla Suite Users: Version 0.2.0.4 contains small structural changes in the extension which might affect the update from versions prior to 0.2.0.4. Please use Jeremy Gillick's "Extension Uninstaller" for Mozilla to uninstall any previous versions.
    http://jgillick.nettripper.com/extuninstaller/