Open a cession.
Click on "Bonjour..." in the top left. Chose "Compte"
It opens a page "Yahoo! infos compte"
Go down to the "Paramètres du compte" section.
Click "Configurer la langue, le site et le fuseau horaire"
In the list box "Site Yahoo! local et langue:"
chose the language you want.
Click on the "Enregistrer" button.
Close the page. Close your cession. Open a new cession.
Electro, July 2011