Intro:
E-------------------------
B-------------------------
G-------5-5---------------
D--5-5--3-3--5-5----------
A--3-3-------3-3--5-5-----
E-----------------3-3----- ~repeat

Also, played at the same time on 2nd guitar, or alone after playing intro 2x
E-----------------------------
B-6-5-6-5-6-5-6-5-6-5-6-5-8-8-
G-----------------------------
D-----------------------------
A-----------------------------
E-----------------------------

That's basically the entire song.  The intro is also the main riff to the song.  There are a few slight variations in the song you'll have to listen for and discern for yourself, but it sounds fine played the same the whole way through.  Enjoy, and please rate.