Ok, this is way I play it:

E:-----------------------------------------------
B:------------------------------------------------
G:-------------------------------------------------
D:-------------------------------------------------
A: 2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2...etc..    (palm muted)
D:-------------------------------------------------

Then just:

E:--------------------------------------
B:--------------------------------------
G:--------------------------------------             repeat, then:
D:9------9--7--9------9--7--9------9--4--5
A:9------9--7--9------9--7--9------9--4--5
D:9------9--7--9------9--7--9------9--4--5


E:---------------------------------------------------
B:--------------------------------------------------
G:---------------------------------------------------               repeat
D:9------12--11--12------12--11--12------12--4--5
A:9------12--11--12------12--11--12------12--4--5
D:9------12--11--12------12--11--12------12--4--5


this isn't everything but at least ya get the basic idea.
Enjoy