I hope this is right...

Bascially, the entire song is palm muted, so its hard to tell if they are using  regular 
power chords...

the chords would be
DAGA-verse
BAGG-chorus

or you could play...

Verse (Listen to strumming)
e---------------------------------------------------------|
B---------------------------------------------------------|
G--7------------------------------------------------------|
D--7---7---5---7------------------------------------------|
A--5---7---5---7------------------------------------------|
E------5---3---5------------------------------------------|
Plam muted


Chorus
e-------------------------------------------------------|
B-------------------------------------------------------|
G-------------------------------------------------------|
D---9---7---5---5---------------------------------------|
A---9---7---5---5---------------------------------------|
E---7---5---3---3---------------------------------------|

It's pretty simple. Enjoy.