Checking+spelling+in+FireFox

=Checking spelling in FireFox=  Right-click (or control-click) a word. (It doesn't have to be underlined.)

Select the "Languages" item and select the language you want to use.

If the language you want does NOT show up, select "Add Dictionaries..."

This will take you to the FireFox Dictionaries and Language Packs add-in page. Find the language you want and click the "Install Dictionary" link for that language.

NOTE: You will have to restart FireFox before the new language is available.