Languages

Hello i have installed several language files downloaded from easysocial, I have purged cache, added a language selector to the profile but not new languages are available for selection by members?

I looked in the forum, and i've looked in the documentation but to no avail ,,

Can somone please tell me how to go about this,, common sense says the files should be automatically added to the selection through the act of simply having them installed but no my common sense is meaning less.

has anybody got a solution to this, it is a bit frustrating that such a function isnt described in the documentation.

thanks