|If you have Vista Ultimate, you can install it together with language packs from Windowsupdate and use any language you want among about 30 languages.|
But that will be a downgrade of course.
I have a feeling that Vista with 2 service packs is more solid than 7.
I have Win 7 x64 but I am having numerous problems with it. Win 7 needs a service pack fast.
Happy new year.