If you like your windows in Nynorsk (a dialect of Norwegian, the other being Bokmål apparently) then you can download the new Windows Nynorsk Language Interface Pack (or LIP for short)
to find out more about Nynorsk – check this from Wikipedia
For a more UK feel you can also have Windows Vista in Welsh
Pecyn Rhyngwyneb Iaith Windows Vista
Do you happen to know when the nynorsk LIP will come out for Windows 7?
Hi Fig00r - sorry I do not, I don't believe we publish that type of info