I kept looking, but I couldn’t find the chorus of the song anywhere so I tabbed it by ear along with the rest of it, I played it along with the song and it sounds at least 98% accurate, I love this song, enjoy!

Standard tuning

Chords:
G 320033
C 032010
D x00232
Dsus4 x00233

    G              C              G             D        Dsus4     G
I'm sitting by the window of your thirty-second floor apartment

                 C                  D      Dsus4
Waiting for your phone calls all to end

    G                C                   G      	     D         Dsus4
I'm sitting watching wind blow, watching time go, watching cars go by

    G                 C             D     Dsus4
I'm waiting for these memories to begin


     (riff 1)     
   If I threw my guitar
                (riff 2)  
Out the window, so far down
       (riff 3)      
 Would I start to regret it
 
Or would I smile and watch it slowly fall? 




(play this during chorus)
(riff 1)
e------------------------------------------------------------------------------------
B------------------------------------------------------------------------------------
G---------------0--0----------------------------------------------------------------
D------4---4--------------------------------------------------------------0---1-----
A---------------------------2---2------2--3--2--------------------3-----------------
E---------------------------------------------------3-0--------3--------------------


(riff 2)
e------------------------------------------------------------------------------------
B--1--1-----0--0--------------------------------------------------------------1---0-
G----------------------2---2-----0--------0------------------------------------------
D--------------------------------------4-----0--0----2--2----4--4----0--0---------
A----------------------------------------------------------------------------------
E----------------------------------------------------------------------------------

(riff 3)
e----------------------------------------------------------------------1----3----4--
B------------------------------------------------------------------------------------
G--------------0--0------------------------------------------0---------------------
D-----4---4------------------------------------------------------------------------
A--------------------------2---2------2--3--2-------------------------------------
E--------------------------------------------------3----0---------------------------





you’ll probably have to listen to the song a few times to get where this part starts and what not but when you get the hang of it, it’s very solid. i haven't quite figured out the part after the chorus, but if i do, i'll be sure to post it =). keep in mind this is my first tab so any suggestions or corrections are totally welcome, have fun, it’s a great song.