This tab is in standard tuning, but the original tuning Andy uses is BEADF#B. But 
hey, It's played the same way.

() - Harmonics
/ - Slide

E|-----------------------------------------------------------------------|
B|-------(7)----(12)-------------------(7)----------(12)-----------------|
G|---(5)----(7)------------------(5)-----(7)----------(12)---------------|
D|---(5)-------------------------(5)-------(7)---------------------------|
A|---(5)-------------------------(5)-------------------------------------|
E|--------------------8-888-8--------------------10--------(12)----0-----|

E|-----------------------------------------------------------------------|
B|-------(7)----(12)-------------------(7)-----------(12)----------------|
G|---(5)----(7)------------------(5)-----(7)------------(12)-------------|
D|---(5)-------------------------(5)-------(7)---------------------------|
A|---(5)-------------------------(5)-------------------------------------|
E|--------------------8-888-8--------------------10---------(12)------8--|

I think these are the main chords he uses, though I'm not sure of the picking/strumming pattern...

E|---0--/---0---|
B|---3--/---7---|
G|---0--/---0---|
D|---0--/---0---|
A|---3--/---7---|
E|---x--/---x---|