This tab took a while to figure out then write out- so please enjoy it!
I know it's not gonna be perfect, but I feel i came relatively close.
Also, I based this tab off a live performance... so reference it!
http://www.youtube.com/watch?v=B_EyAu78Q6E

Tuning:Open E (EBEG#Be). He actually tunes it to open D (DADF#Ad) then sticks
a capo on the 2nd fret, which makes it easier on the strings. All notes
are relative to the capo by the way.

Final note- the whole song is finger-picked, which kinda seems necessary for the tone of 
this song.

Intro: The bass notes aren't a hundred percent, but it flows nicely.
e |-12---12---11---11---7--7---9--9---7--7---5--5---5--5---4------|
B |---0----0----0----0---0--0---0--0---0--0---0--0---0--0---0-----|
G#|----12--------10-------7------7------7------5------5------3----|
E |---------------------------------------------------------------|
B |---------------------------------------------------------------|
E |-0-------0-0-------0-0----0-0----0-0----0-0----0-0------0------|


Verse:
e |-------0-------------------------------------------------------------------|
B |-2/4-0-----------------0--0------------0--0-----------0--5---------------7-|
G#|---------0-1-/3-0------1--0-1----------3--5-3-0-------5--5-5----------7--7-|
E |------------------0----0--0---2--------0--0-----------0------5--------7----|
B |---------------------------------------------------------------------------|
E |-0------------------2-2--2------2-2/4-4--4-----4-4/5-5--5------5-5/7-7--7--|

--------------0-------------0---------------------------------------------0-|
-----------0----0-----2/4-0----------------0--0------------0--0----------0--|
-7---------8------------------0-1/3-0------1--0-1----------3--5-3-0-----1---|
---7-------0------0-------------------0----0--0---2--------0--0--------0----|
----------------------------------------------------------------------x-----|
-----7-7/8---8------8-0-----------------2-2--2------2-2/4-4--4-----4-5------|

Chorus: This is the general idea, I can't say it's for sure note for note
e |----0----------------0----------------0-------0-----------|
B |-5-------10---9---7----7--12---9---2----2--1----1---------|
G#|--0---0----0---0---0----0---0---0---0----0--0----0--------|
E |---0---0----0---0---0--------0---0---0-------0------------|
B |-5-------10---9---7-------12---9---2-------1--------------|
E |----------------------------------------------------------|

e |----0----------------0----------------0-------0--------0---------0--|
B |-5-------10---9---7----7--12---9---2----2--1----1-----0--0------0---|
G#|--0---0----0---0---0----0---0---0---0----0--0----0---7----7----7----|
E |---0---0----0---0---0--------0---0---0-------0----------------0-----|
B |-5-------10---9---7-------12---9---2-------1-----------------x------|
E |---------------------------------------------------/7-------5-------|

Bridge: the 'let go' part. this is the only part he strums so listen for the
pattern, and this is the only part I'm really unsure of (it starts at 2:27
btw)The first 2 chords should be right, but after that I'm wrong- oh well.
e |-12--11--12--11------|
B |-0---0---0---0-------|
G#|-12--10--12--10------|
E |-0---0---0---0-------|
B |-0---0---0---0-------|
E |---------------------|

This is my best guess which isn't very good lol
e |-5--4--|
B |-0--0--|
G#|-5--3--| repeated a lot
E |-0--0--|
B |-0--0--|
E |-------|

After this he does the chorus once more, then intro to finish it.

Enjoy! and feel free to comment and rate.