I'm not 100% how they get the sound for the main riff,
its almost like a real light palm mute but it doesn't really matter if
you don't.

e|-----------5---------------------------------------------------------------|
B|-------6-------6-----------5-------------------6-------5---8---5-----------|
G|---7-------------------5-------5-----------7-------5-----------------------|
D|-------------------7-------------------8-----------------------------------|
A|-----------------------------------8---------------------------------------|
E|---------------------------------------------------------------------------|

e|---------------6-------6--10---6-------5---8---5-----------5-----------------|
B|-----------6-------8---------------6---------------5---8----------7----------|
G|-------7-------------------------------------------------------7-------------|
D|---8-------------------------------------------------------------------------|
A|-----------------------------------------------------------------------------|
E|-----------------------------------------------------------------------------|

 And this riff isn't really played on guitar at all but in case you want to use it.

e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|--0--3-3-3-3-3---3--5--3-2-0----5-3-2-0---5-3-2-0--------------------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|
(or if you want you can play that same riff starting on the 3rd fret on the B string.)
B|----3--6-6-6-6-6---6-8-6-5-3-etc...----------------------------------------|

Guitar 2 with just a little distortion and a little tremolo, or at least thats what i 
like to me.
Play it really light on the 2nd verse and then harder on the 3rd verse.


e|------------------------------------------------------------|
B|------------------------------------------------------------|
G|---7------2-------------------------5-----------------------|
D|---7------2---------3---------------5-----------------------|
A|---5------0---------3---------------3-----------------------|
E|--------------------1---------------------------------------|

e|------------------------------------------------------------|
B|------------------------------------------------------------|
G|------------------------------------------------------------|
D|---4---------5-----------3----------2-----------------------|
A|---4---------5-----------3----------2-----------------------|
E|---6---------3-----------1----------0-----------------------|

pretty easy so go nuts.