Bloginfo Multilingual

Hello,

I'm using i18n module with no problem along all my Web. I've installed bloginfo and I'm using it to replace the Blog title of my posts as is indicated in this thread:

http://drupal.org/node/141589

My problem is that I would like to have the title (and maybe the description) in two langages, but I don't know how to do it.

With other variables like site_slogan, for example, I'm using this solution:

Inside site/default/settings.php:

/**
* Multilingual settings
*
* This is a collection of variables that can be set up for each language when i18n enabled.
* These are the basic ones for Drupal core, but you can add your own here.
*/
$conf['i18n_variables'] = array(
'site_slogan',
);

The problem is that I don't know how to find the name of the variable storing the Blog title.

How could I have the blog title multilingual?

Thank you very much,

Potter.