This is my personal version of the intro. I hope you all like.
For a good interpretation, listen the version of alanis morissette.

Capo 2nd fret

Intro: 
e |--2-4-5------------------------------| 
B |---------2-2-3-5-------5-------------| 
G |-------------2-2-----2-2-2-2h44------| (4s are separate)
D |----------------------------2-2------| 
A |-----------5-------------------------| 
E |------2------------5-----------------| 


(Em - Cadd9 - G - D for the rest of the song)