Update User Display Language

Hello,

How can I add languages to the  user My Display Language in the profile?

(I don't use User Profile Services)

I create a ASPX page, but dont understand exactly this page: http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.administration.spusersettingsprovider.updateuserdisplaylanguagesettings.aspx

Could you send some example code?

Thanks,

Istvan