This song had only 2 basic chords.

you tune your 6th string down to D


the first chord. similar to a Bb.
play

E ----1-------3------------------------------|
B ----1-------3------------------------------|
D ----1-------3------------------------------|
G ----1-------3------------------------------|
A ----1--------------------------------------|
D ----1--------------------------------------|  


then you just slide down to this chord. similar to a B


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



play each chord about 16x.

this is pretty much it. hope you guys enjoy.