alright the last post of this song was kinda schizo.  this is one of my favorite Green Day songs so i'm making the effort to tab this out.  
in the actual song i believe the bass is humming away on a B note throughout the whole intro, but the same part can be done on the guitar with some careful finger maneuvering.  tune down half a step.     

Intro: (the basic finger positions.  as the buildup progresses billy goes intermitantly from plucking individual strings to strumming them to playing a full B chord and adding a bunch of muted stuff in between.)
                             B
    Eb|---------|---------|------
    Bb|---------|[4][5][7]|--4---
    Gb|---------|[4][4][4]|--4---
    Db|---------|-1--2--4-|--4---
    Ab|-2-2-2-2-|-2--2--2-|--2---
    Eb|---------|---------|------    
                            
   
 
Verse: (power chords!!!)

B   E   B   E   

 B       E                  B        E             G#

...Ready for a cheap escape.  On the brink of self-destruction.
	   F#	
Widespread panic.
B			      B
  Broken glass inside my head.  Bleeding down these thoughts of
G#		F#
Anguish... mass confusion.


Chorus:
          E	     B	               F#             B
Well, the world is a sick machine, breeding a mass of shit.
	    E           B                 A                   F#sus
With such a desolate conclusion, Fill the void with...l don't care.


Verse:

B                               B                   G#
  There's a plague inside of me,  Eating at my disposition.
	  F#	
Nothing's left, 
B                     B                     G#                 F#
  Torn out of reality.  Into a state of no opinion.  Limp with hate.


Chorus:
          E	     B	               F#             B
Well, the world is a sick machine, breeding a mass of shit.
	    E           B                 A                   F#sus
With such a desolate conclusion, Fill the void with...l don't care.


Closing Verse:

B            A   F#    
I wanna jump down.       
B            A   F#    
I wanna jump down....       (repeat until end of song)