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                 E             D            A
If I could take away the pain and put a smile on your face
 
Bm      F#-     D       A
Baby I would, baby I would

      A                 E             D            A
If I could make a better way, so you could see a better day
 
Bm      F#-      D      A
Baby I would, baby I would, 



 A                 E             D        A
Baby do it to the sky and lend you the keys,

     Bm                F#-                    D              A
Let you know that you're always welcomed so that you never leave

      A                 E             D            A
Why you owe those fancy things that you only see on tv, yeah
 
   Bm                F#-                    D          A
Run away, to a hut away, we be living the american dream

  A            E          D            A
And i, know it's never gonna be that easy

   Bm      F#-      D      A
But I know that he want us to try



A                 E             D            A
If I could take away the pain and put a smile on your face
 
Bm      F#-     D       A
Baby I would, baby I would

      A                 E             D            A
If I could make a better way, so you could see a better day
 
Bm      F#-      D      A
Baby I would, baby I would


 A  E   D  A    A  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 :)