Rails - Jan 2006 - how to send cookie value from rails app to browser - newbie

Hi

I am writing a multilingual app,  now from sasa''s ruby
gettext<http://manuals.rubyonrails.com/read/chapter/105>instructions,
i have made it so far that it works if i manually type alsong
with the url ?lang=en or ?lang=fr , but i don''t know how to have rails
do
that automatically , i tried to read some material on cookies and sessions ,
but could not understand it properly ..
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