[Missing Language option in Tools, Word04]

I would like to swap between languages in Word, or for there to be an
automatic language recognition (like there was up to a week ago).

Last week the option 'Language' in the 'Tools' toolbar has disappeared -
(making the tips I've read so far on how to select languages that way pretty
useless).

I have tried to fix the problem by going through Format, Style etc in Word
itself, and by adding languages on the main op system etc but nothing works.
I just want the Tools-Language option in Word to come back! How do I do this?