I have no idea if this is right - I have never seen dave play it so I
can't be 100 %, but here is my best guess.  Hope it helps.

Standard Tuning (EADGBe) 

Chords for intro/verse

x2x43x
x547xx
x577xx-----------------------------> actually played more like this
xx578x----> (played like this         -----------------------------     
xx4432      xxx235 about every        -----------------------------
x547xx      other time - then         ----------------7------------
x7765x      back to x2x43x            ----------5/7----------------
x4x65x                                -------5---------------------
                                      -----------------------------

chords for chorus

779987
557775
577655

if anyone has a better, more accurate way to play it let me know
cause I'd love to learn the real way. reils41@hotmail.com