Hi Adrian,
> Ok, I've signed up with GT so they will be billing me in due course...
> but how do I rig up the new Cafetran so that it will work with it? I
> get "Google Translate is unavailable"
Sorry if it's a dumb question, but have you entered your new key in
Edit > Options > MT services?
http://screencast.com/t/4rb2qiOD0aR
Cheers,
Dominique