Standard Tuning
I think this is pretty close.  Just listen to the song, he adds in some slides and notes in certain places.

Verse Riff
g|--------------------------------------------------------------------------------|
d|--------------------------------------------------------------------------------|
a|------------7-7/8-7-3h5-5----------------------------------------------------|
e|7?3h5-5------------------7/8-----------------------------------------------|

Chorus Riff
g|-----------------------------------------|
d|-----------------------------------------|
a|-8-8-8-8-4-4-4-4-6-6-6-6-8-8-8-8-|
e|-----------------------------------------|

Bridge
g|--------------------|
d|---3-5-7----------|   **In this part add some fills in there
a|-5-----------------|
e|--------------------|

thats pretty much it. Its not the best dave song but i had to learn it so here it is.