Change language in firefox?

How can I change the language of firefox? do I need to uninstall and then install it once more?Change language in firefox?
Open firefox

got to tools

select options

click the content tab

at the bottom it will say choose your preferred language

choose and click ok

good luckChange language in firefox?
There are two options



Resinstall

The localized version are here:

http://www.mozilla.com/en-US/firefox/all鈥?/a>





OR

go to

https://addons.mozilla.org/en-US/firefox鈥?/a>



and install ur dictionary and language pack of your preferred language



I suspect if this will change the language of your add-ons