the whole song is played with these three chords:

  E          B7          A
--0----------0-----------0-----------------------
--0----------0-----------2-----------------------
--1----------2-----------2-----------------------
--2----------1-----------2-----------------------
--2----------2-----------0-----------------------
--0----------------------------------------------

in that respective order.  for the verses palm mute and strum
only the lowest three strings.  on the chorus...let it wail.
enjoy.  for any questions or comments email me at 
number1bassist@wmconnect.com