This is based on the tab from Matthew Nordhaus, I made some changes that seem to make it play better IMHO.

-- Capo 2nd Fret --
 
INTRO:  D G A Bm G  (x2) 

                       D (xx0232@1)        A (x02220@1)                Bm (x24432@1)    G (320003@1)I look straight in the window,       try not to look below 
                D (xx0232@1)        A (x02220@1)                   E (022100@1)      G (320003@1)Pretend I'm not up here,          I try counting sheep 
                  D (xx0232@1)      A (x02220@1)           Bm (x24432@1)      GThe (320003@1)sheep seem to shower,    off this office tower 
         D (xx0232@1)            A (x02220@1)                E (022100@1)     GIt's (320003@1)9.8 straight down,    I can't stop my knees. 

CHORUS: 
                Bm (x24432@1)          A (x02220@1)                 E (022100@1)     G (320003@1)I wish I could fly, from this building, from this wall. 
                Bm (x24432@1)           A (x02220@1)             E (022100@1)     G (320003@1)And if I should try, would you catch me, if I fall.  

                   D (xx0232@1)         A (x02220@1)           Bm (x24432@1)    G (320003@1)My hands clench the squeegee,     a seclar rosary 
               D (xx0232@1)      A (x02220@1)                E (022100@1)     GHang (320003@1)onto your wallet,     hang onto your rings. 
            D (xx0232@1)        A (x02220@1)              Bm (x24432@1)        G (320003@1)I can't look below me,   something might throw me.
               D (xx0232@1)            A (x02220@1)                E (022100@1)     GI (320003@1)curse at the windstorms,          that October brings. 

              D (xx0232@1)         A (x02220@1)           Bm (x24432@1)          GI (320003@1)look in the boardroom,     a modern Pharaoh's tomb. 
                D (xx0232@1)       A (x02220@1)                E (022100@1)     GI'd (320003@1)gladly swap places,      if they care to dive 
                   D (xx0232@1)        A (x02220@1)               Bm (x24432@1)    GThey're (320003@1)lined up at the window,      peer down into limbo 
               D (xx0232@1)       A (x02220@1)             E (022100@1)       GFrightened (320003@1)of jumping,      in case they survive. 

               G (320003@1)                 A (x02220@1)      
I wish I could step, from this scaffold, 
     Bm (x24432@1)                 E (022100@1)      
Onto soft green grass and shopping malls, 
    G (320003@1)         A (x02220@1)            Bm (x24432@1)          A (x02220@1)       
or bed, with my family, and my pastor and my grandfather 
      E (022100@1)   G (320003@1)who's dead. 

(softly)             D (xx0232@1)      A (x02220@1)              Bm (x24432@1)       GLook (320003@1)straight in the mirror,     watch it come clearer
                D (xx0232@1)       A (x02220@1)                E (022100@1)     G (320003@1)I look like a painter, behind all the grease. 
               D (xx0232@1)       A (x02220@1)                Bm (x24432@1)       GBut (320003@1)painting's creating,     and I'm just erasing 
                D (xx0232@1)       A (x02220@1)                E (022100@1)     GA (320003@1)crystal clear canvas,          is my masterpiece. 


CHORUS: 
                Bm (x24432@1)          A (x02220@1)                 E (022100@1)     G (320003@1)I wish I could fly, from this building, from this wall. 
                Bm (x24432@1)           A (x02220@1)             E (022100@1)     G (320003@1)And if I should try, would you catch me, if I fall.  
                Bm (x24432@1)          A (x02220@1)                 E (022100@1)     G (320003@1)I wish I could fly, from this building, from this wall. 
                Bm (x24432@1)           A (x02220@1)             E (022100@1)     G (320003@1)And if I should try, would you catch me, if I fall.  

       DA BmG    DA EG
When I fall...     When I fall.... mmmmmm