Only one guitar in this song (as near as I can tell) and I think its Conrad singing
Standard tuning, light distortion/mid overdrive throughout

Bass (throughout verse):
A ----3-3-3-3-3-3-3-3-3/5-5-5-5-5-5-5-5-7-7-7-7-7-7-7-7/9-9-9-9-9-9-9-9-
(you get the idea)

Guitar comes in with fast down-stroke (punk) strumming (follows bass? changes):

Cadd9    Dsus4   Em7   G/F#				(Repeat throughout verse)



Chorus:
Am                          Em                 D
       ?Coz I am only half of what I am?..

Continue this pattern x3 then play Am and back to verse for the ?im not sure if I wanna know? bit

Cadd9:   x320033
Dsus4:   xx0233
Em7:      022033
G/F#:     200033
Am:        x02210
Em:        022000
D:           xx0232

That?s about it, very simple song, but one of the best on the debut, hope y?all enjoy it
Any questions/corrections: the_aeroplane_flies_high2002@hotmail.com