Adam Lambert - More Than chords

Hey ... okay, I did this tab, but it occurs to me that I have a little prob ;-). 
If you look at the intro you can see two C-chords. The first is the "normal" one 
and the other one is like B on the 3rd fret. On my guitar the both chords sound 
different and that's the reason why I'm using them. If you can't hear a difference 
on your guitar then use Am instead of C(III). And I'm not sure about the chorus-
chords, so if you know them better please correct me ...

Intro

Em-C-C(III)-D

[ Tab from: http://www.guitaretab.com/a/adam-lambert/345912.html ]
Verse 1
        Em
So they paved the world to providence
    C
And lined up the memories
   C(III)                        D
In reference to what is dead and gone
     Em
Then the band and the symphony
C
In sweet sounding harmony
C(III)                 D
Lay down their guns in disgust
    C               C(III)     D
For they knew their armies had lost


Chorus
   C          F
So haven't we seen enough
             D
On the cover of
C          F
Haven't we had our fun
                D  C(III)
Watching on the TV screens
   D
Oh yeah


Verse 2
      Em
So we harbour our hopes and fears
C
In houses and evergreens
C(III)              D
Cast adrift what we don't need
         Em
Then the rhythm of tambourine
C
And drama of marching scene
C(III)                     D
Lay down their violence in trust
    C         C(III)      D
For they knew how much to cost


Chorus

    Em
For when all is said and done
C           
And our aims run
C(III)     D
Then we'll come