Intro

The rhythm of the intro is something like this,
it changes slightly as it progresses towards the verse.

G|---------------------------------------|
D|---------------------------------------|
A|----7---7---7---7---7---7--7--7--------|
E|--0-------0-------0---0---0------------|

you could also play this

G|------9---9---9---9---9---9---9--9-----|
D|---------------------------------------|
A|---7--------7-------7---7---7----------|
E|---------------------------------------|

Verse

G|-------------------------------------------------|
D|-------------------------------------------------|  x3
A|-------------------------------------------------|
E|--0--0--0--0--0--0--0--0--0--0--0--0--3-3-3-3----|

G|-------------------------------------------------|
D|-------------------------------------------------|
A|-------------------------------------------------|
E|--0--0--0--0--0--0--0--0--0--0--0--0--7-7-7-7----|

Chorus

G|-----------------------------------------|
D|---------9----------9--------------------|
A|---10-10---10-10-10---10-----------------|
E|---------------------------7-7-7-7-7-----|

G|---------------------------------------------|
D|-------9-------9-----------------------------|
A|---7-7---7-7-7---7--------------------9/10---|
E|--------------------10-10-10-10-10-10--------|

that is played twice and leads into this part which repeats

G|------------------------------------------------------------------|
D|------------------------------------------------------------------|
A|--------------------------------5-7-7-7-7-7-7-7-5-----------------|
E|--3-3-3-3-3-3-3-5-7-7-7-7-7-7-7-------------------7-7-7-7-7-7-7-5-|

from here it goes back to the intro riff, and then repeats the same verse riff and the 
chorus riff, the only real difference is that the second part of the chorus riff is 
more, then each note is picked once instead of repeated for the end part.