Microsoft this week released, both to the MSDN subscriber download site and to public downloads, a language pack for Team Explorer Everywhere 2010 SP1 that includes: Japanese, French and German resources that can be added to your English Team Explorer Everywhere installation.
The new language packs require that you've already installed Team Explorer Everywhere 2010 SP1. After installing them, TEE will use the appropriate language based on your operating system locale. Of course you can override it if you want (there's a link to http://www.eclipse.org/babel/ in the instructions for more on this).
There is actually only one language pack and it includes all 3 additional languages. However, there are 4 download pages for it. The only difference in the download links is that the download page and instructions are in different languages. They will all actually install the same stuff on your machine.
Here're the 4 public links: