I think the tunning is standard but im not to sure, this tab is easy to play and just
around 4 chords Cadd9 Em Dsus4 and G

Cadd9-(x32033)
Em-(022033)
Dsus4-(xx0233)
G-(320033)

Intro
Cadd9-Em-G  Cadd9-Em-Dsus4 x2 At 
end of the 2nd intro let the G ring

Verse

            Cadd9And (x32030@1)when it rains
                Em (022000@1)            G (320003@1)         Cadd9On (x32030@1)this side of town it touches, everything
                  Em (022000@1)        GJust (320003@1)say it again and mean it
                Cadd9You (x32030@1)dont miss a thing, and made yourself a bed
                     Em (022000@1)         GAt (320003@1)the bottom of the blackest hole
     Cadd9 (x32030@1)                                      Em (022000@1)                Dsus4And (xx0233@1)convince yourself that its not the reason you dont see the sun anymore

Chorus
   Cadd9 (x32030@1) Em (022000@1)          GAnd (320003@1)oh, oh how could you do it?
Cadd6 Em (022000@1)       Dsus4Oh (xx0233@1)i, i never saw it comming
Cadd9 (x32030@1) Em (022000@1)       GOh, (320003@1)oh i need the ending
   Cadd9 (x32030@1)       Em (022000@1)       Dsus (xx0233@1)           Gso (320003@1)why cant you stay just long enough to explain

2nd verse

chorus

Em (022000@1) G (320003@1) Cadd9take (x32030@1)your time
Em (022000@1) G (320003@1) Cadd9take (x32030@1)my time

Em (022000@1)                  Gtake (320003@1)these chances to turn it around
Cadd9
take these chances, we'll make it somehow
Em (022000@1)                   Gtake (320003@1)theses chances to turn it around
Cadd9
turn it around


  Cadd9 (x32030@1)name="chord_022000@1">Em            GAnd (320003@1)oh how could you do it
Cadd9 (x32030@1)name="chord_022000@1">Em         Dsus4 (xx0233@1)            x2
Oh i, i never saw it comming

full chorus


Em (022000@1)               G (320003@1)           Cadd9 (x32030@1)You can take your time,take my time

END HOPE YOU ENJOY