Thank you for the support to all of you. But I think that you misunderstand my situation.

I don't se any problem to build a website with bluevoda if it was one language website.

My problem is that i have to use a multi languages website and i want to make a navigation plan on paper before trying anything.

So, is it one index for all languages/or onr for each?
How to swich from language to language? let say from english to french?
How to come back to english?

thanks in advance to all of you