Drop D tuning sounds best but i guess you could use standard tuning

This is the first bit of the intro i dont have my guitar with me but im pretty sure its right

------19----19---19----19--20-----19---19---19---19--20-----
---------17---17----17---------------17---17---17-----------
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-----17---17---17---17--19----17---17---17---17--19---------
--------15---15---15-------------15---15---15---------------
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Repeat all of this x1

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---2---2-2-3----2---2-2-3----2---2-2-3----2---0-2-----------
---2---2-2-3----2---2-2-3----2---2-2-3----2---0-2-----------
---2---2-2-3----2---2-2-3----2---2-2-3----2---0-2-----------

Repeat once

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----0-2-0-2-0-2-0-2-333------------0-2-0-2-0-2-0-2-333------
----0-2-0-2-0-2-0-2-333------------0-2-0-2-0-2-0-2-333------
----0-2-0-2-0-2-0-2-333------------0-2-0-2-0-2-0-2-333------

The chorus is a mix of all that but i havnt got the verse yet cos like i said i dont hav 
my guitar with me but ill post it up here as soon as i figure it out which will be soon...