Go to LW's menu View>Languages>Norwegian or whichever language you'd prefer. After changing language you 'might' need to re-open LW for it to take effect. eg:
http://www.gnutellaforums.com/showth...6994#post96994 which is changing from german to english
When you 1st install LW it gives you the option of which language you want the installer instructions to be in.