I had the same problem myself. It took me several minutes to
finally find out how to change the language settings on the
2007 version. First, you click on the REVIEW tab at the top.
Then in the far left box, you should see an world icon with a
red check mark on it. Click on that and you can change the
language settings and to automatically detect what language
you are typing in as well as turning on or off the
autocorrect, etc.