JATEDISSE

- Install any language pack on any Vista Edition ( Starter, Home basic, Home Premium, Business… )

- Works for x86 and x64 Vista.

- Works with SP1.

- Switch to a previously installed language.

How to use it:
Burn the iso to a CD, boot with it you will have this screen:

- To install a language:
Choose your Windows path (1)
Choose your vista version: x86, x64 and if it has SP1 installed or not (2)
Choose your language file (exe or cab), it must correspond to your Vista version (3)
If not autodetected choose the language to install (4)
Click Install (5)
Reboot

- To switch to a previously installed language:
Choose your Windows path (1)
Choose the language to switch to (4)
Click Change (6)
Reboot
Download links:
http://thepiratebay.org/tor/4177878/Change_Vista_Language_1.0
http://www.demonoid.com/files/details/1468388/
http://www.mininova.org/tor/1391204