Intro/Main Riff
D|---------------------------------------------------------------------------|
A|---------------------------------------------------------------------------|
F|----0------0---0-------0------0---0-------0------0---0--------0------0---0-|
C|--9---9-10---9-------9---9-10---9-------9---9-10---9--------9---9-10---9---|
G|7------------------7------------------7-------------------7----------------|
D|0------------------0------------------8-------------------8----------------|
There are a few variations in this riff throughout the song, but this is what is mainly being played.
The next part towards the end of the song is using the same chords with some tremolo picking on individual 
strings. 
Enjoy.