If you want to, you can watch my Video-Tutorial for this song here:
http://www.youtube.com/watch?v=P6Ppm8jgNCE
It will help you to understand this tab better, even though it is alredy kinda clear.

CHORDS:

E = 022100 ( or E4 = 022200 )
A = X02220
D = X00232
Bm =224432
F#- =244222

A (x02220@1)               E (022100@1)           D (xx0232@1)          AIf (x02220@1)I could take away the pain and put a smile on your face
 
Bm (x24432@1)    F#-     D (xx0232@1)     ABaby (x02220@1)I would, baby I would

A (x02220@1)               E (022100@1)           D (xx0232@1)          AIf (x02220@1)I could make a better way, so you could see a better day
 
Bm (x24432@1)    F#-      D (xx0232@1)    ABaby (x02220@1)I would, baby I would,



A (x02220@1)               E (022100@1)           D (xx0232@1)      ABaby (x02220@1)do it to the sky and lend you the keys,

Bm (x24432@1)              F#-                    D (xx0232@1)            ALet (x02220@1)you know that you're always welcomed so that you never leave

A (x02220@1)               E (022100@1)           D (xx0232@1)          AWhy (x02220@1)you owe those fancy things that you only see on tv, yeah
 
   Bm (x24432@1)              F#-                    D (xx0232@1)        ARun (x02220@1)away, to a hut away, we be living the american dream

A (x02220@1)          E (022100@1)        D (xx0232@1)          AAnd (x02220@1)i, know it's never gonna be that easy

Bm (x24432@1)    F#-      D (xx0232@1)    ABut (x02220@1)I know that he want us to try



A (x02220@1)               E (022100@1)           D (xx0232@1)          AIf (x02220@1)I could take away the pain and put a smile on your face
 
Bm (x24432@1)    F#-     D (xx0232@1)     ABaby (x02220@1)I would, baby I would

A (x02220@1)               E (022100@1)           D (xx0232@1)          AIf (x02220@1)I could make a better way, so you could see a better day
 
Bm (x24432@1)    F#-      D (xx0232@1)    ABaby (x02220@1)I would, baby I would

A (x02220@1)E (022100@1) D (xx0232@1)A (x02220@1)  A (x02220@1)F#-
Wo-oh,  wo-oh,  wo-oh   baby I would

2 part is THE SAME

AT THE END OF THIS SONG THERE IS THIS SHORT PART:

"Yeah it's not about what I want
It's all about what you need
I know that it hurt you, but that wasnt me
And I know, and I know sometimes it's hard to see
That all we need to be"

I learned this song today and I didn't have the time to learn this short final 
part, see if you can find it yourself or wait for someone else to tab it :)