Hey this is just how i worked the intro out by ear...

i can get the intro down its quite easy... if you want to play along the the recording 
just hammer the d string on the 2nd fret and bend the 2nd fret G string (or third fret.. 
whichever you're more comfortable with.



-----------------------------------------------------0--------------------|
--------------------------------------------------------------------------|
------------6---7---9---s-7---(7)---s-6-----4----0h1----then form E7------|
-0/4--------4---6---7---s-6---(6)---s-4-----2-----------------------------|
--------------------------------------------------------------------------|
--------------------------------------------------------------------------|



at the end of the tab where it says form E7 it means play and E7 and hammer the G string 
on the first fret

Tony also hammers the d string in the E7 chord