Here is the parts for the piano on guitar... only on the intro part though. 
 
 
E----3----------------------------------3------------ 
B----3---------------------------------3-3------------ 
G----0--------------------------------0---0----------- 
D----0-------5-7-9-7--5-9--0-2-------2-----2---------- x2 
A----2------------------------------3-------3--------- 
E----3----------------------------------------------- 
 
(Strum G chord)                (Pick Cadd9 chord) 
 
 
 
 
and the little off note right before he starts to repeat it is an A...  
so just hit the A string open. 
 
 
And be creative and use hammer-ons, pulloffs, and slides to make it 
sound better.