Would you like to install different language to your english Windows Vista?
Pretty easy with “Language packs” .
32bit version
64bit version

After few months of waiting, MS Vista SP1 is out. You can check the MS website or follow direct links for 32-bit version and 64-bit version. Shame that its available only in English (US), French, German, Japanese, or Spanish (Traditional). Rest of the world has to wait till middle of April.