It's not the original version. It's just how I like to play it. 
In the original version there are some more chords in the Chorus 
and some chords are just played in another way. 
If you want to play it this way but in the 
original key, use Capo on 4th fret. ;)
(KT Tunstall plays it in this key)

E   022100    A** 577650
E*  076450    B   x24400
F#m 244200    C#m x46650  
Abm 466400
A   x02220
A*  x02200

INTRO:
  E  - F#m-Abm -  A  - A-A* - C#m - Abm - A - E - F#m - B - E

(the spaces between the chords indicate how long you play it. 
So the first E is played long and the F#m-G#m (the 2 chords) 
are played short. Listen to the song to understand it ;))
(if you want to play it the orignal way, play this intro twice, 
and play the chorus chords after that)

VERSE 1:
E                   F#m Abm
When I had you to myself
  A                      A* A
I didn't want you around
      C#m    Abm    A     E        F#m       B    E
Those pretty faces always made you stand out in a crowd
    E                            F#m Abm 
But someone picked you from the bunch
    A                      A* A
one glance was all it took
C#m      Abm       A       E     F#m    B      E
Now it's much too late for me to take a second look

CHORUS:
E*      C#m      B       A
Oh baby give me one more chance
A**
(show you that I love you)
C#m  F#m  A      E   F#m  B
Won't you please let me
E
(back in your heart)
E*         C#m   B        A
Oh darlin' I was blind to let you go
 A**
(let you go baby)
    C#m F#m   A  E  F#m  B     E
But now since I see you in his arms
 E
(I want you back)
Yes I do now
(I want you back)
Ooh ooh baby
(I want you back)
Ya ya ya ya
(I want you back)
Na na na na

VERSE 2:
E                              F#m Abm
Tryin' to live without your love
    A                  A* A 
Is one long sleepless night
C#m   Abm       A    E
Let me show you girl
    F#m      B          E
That I know wrong from right
E                       
Every street you walk on
F#m Abm  A                        A* A
 I leave tearstains on the ground
C#m   Abm  A   E
Following the girl
        F#m    B      E
I didn't even want around
Let me tell you now

CHORUS:
E*      C#m    B       A
Oh baby all I need is one more chance
A**
(show you that I love you)

C#m  F#m  A      E   F#m  B
Won't you please let me
E
(back in your heart)
E*         C#m   B        A
Oh darlin' I was blind to let you go
 A**
(let you go baby)
    C#m F#m   A  E  F#m  B     E
But now since I see you in his arms

   This part you just play E - A - E
Uh-huh
A buh buh buh buh (2 times)
All I want
A buh buh buh buh
All I need
A buh buh buh buh
All I want
A buh buh buh buh
All I need

   Play the chorus here 2 times
Oh just one more chance
to show you that I love you
baby! (6 times)

I want you back
Forget what happened then
I want you back
Let me live again

Oh baby I was blind to let you go
But now since I see you in his arms
Spare me of this cause
Gimme back what I lost

Oh baby I need one more chance ha
I tell ya that I love you
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