http://robcubbon.com/go/wpml — download WPML WordPress Multi-Lingual plugin here!
I recently created a website with 5 different languages and I was amazed at how quickly and easily the framework for a multi-lingual site could be set up.
You can make any sort of WordPress website multilingual and roll out the SEO benefits into different markets.
WordPress 3.1 and WPML plug-in version 2.2.0
Another good video about WPML here: http://youtu.be/MKPQOiTzV3k