Unofficial translation patch:
Generally, aside from the tutorials and terms of use, anything I know how to change has been translated.
Available as follows:
Individual files: A, B, C. Right click, save as. Make sure B and C don't have .txt at the end (Firefox believes they're text files for some reason).
Full archive: here.
These should not affect anything outside of the text, but as always, back up your original files.
EDIT 4/9/2012, 0000 EST: Fixed a few errors ("Vantage"->Bandage, "Small cap(?)"->Ordinary Cap), cleaned up post contents.
EDIT 4/9/2012, 1945 EST: Short Mash->Short Mop Top, Medium Mash->Medium Mop Top.
EDIT 4/9/2012, 2030 EST: Missed a couple option menu options (whooops). Still can't find the "Exit" dialog (when you click the X on the window), the button display types, or the "Share hair color" option for eyebrows in the character creator.