Youl'd probably be best off using a fixed font in Word anyway for chord alignment, I'm not sure you can guarantee every one would see your alignment.

Any way, not sure how <pre> works here (this looks fine on preview without auto line breaks) but this with luck is roughly what I see with your word doc but aligned for a fixed font in html.

  C---------------------------G7----------C
  Now you've heard of the Titanic, an iceberg her de-mise;
  ---F--------------------------C 
  You've heard of Amelia Earhart, whose plane plunged from the skies;
  ----F--------------------------------C 
  But have you heard of the Kasii Maru, her fate true tragedy;
  -------------------------------G7------------C
  When she was sunk by a falling cow while trawling on the sea?