Custom Menus – How to add a home link?

I’m using qTranslate which makes my links look like site.com/language/post/

I need to keep the language part of the url when linking to the homepage (can’t be absolute) so it will look like site.com/language/

If I could use PHP, bloginfo(‘url’) gives me what I want, but it seems I can only use a string for the custom menu URL.