Well the only advice I can offer would be...The same thing Xoal told me before..
Download blender, and google how to use it..once you practice enough, you can try to apply, with mabey an example of your work.
And I do not think you would neccisarrily be needed for diologue translation, since this 'is' english spoken game [if your getting at translating to a different language] and all if not most, of the develpoers speak pretty damn good english, wherever they came from...
