You need to create for every lanquage a new project (offcource translated) and copy this to a map with has a different name (leke EN for english or wahtever you choose.

See also: http://answers.websitex5.com/post/26661

You don't need the welcome page if you don't want it, then you need to work with links (like flags in the banner or something)

If you need more info just ask, but check answers also there are many topics.

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