Check out my cover for this song on Youtube
http://www.youtube.com/watch?v=HijFzRTpW3I

nh=Natural Harmonic
the main riff of the song is
E-----------------------------------------------------0-------------------|
B-------------------------------------------------0------0--nh12----------|
G--7h9-7h9-7-4---------7-----------4--------------------------------------|
D----------------------7h9-------5h7--------------------------------------|
A-------------------------------------------------------------------------|
E-------------------------------------------------------------------------|


the other parts are
Play this twice
E---3-------3----3-----3--------------------------------------------------|
B------3------3----3------3-----------------------------------------------|
G--------4------------4---------------------------------------------------|
D-------------------------------------------------------------------------|
A-------------------------------------------------------------------------|
E-------------------------------------------------------------------------|

Then this twice

E---2------2----2------2--------------------------------------------------|
B------3------3----3------3-----------------------------------------------|
G--------4------------4---------------------------------------------------|
D-------------------------------------------------------------------------|
A-------------------------------------------------------------------------|
E-------------------------------------------------------------------------|

After this play the main riff again twice then Em and C for the intense part. then 
repeat. Hope this helped