Intro:

Riff 1
G|——————————————————————|
D|——————————————————————|
A|—————————————4—4—6—6——|
E|4h6—6—6—4—4———————————|

When Billy starts to sing switch to this:

Riff 2
G|——————————————————————|
D|——————————————————————|
A|—————————————6—6—8—8——|
E|6h8—8—8—6—6———————————|

After billy sings "Daddies not coming home" Go back to Riff 1. You can tell
when the cahges between Riff 1 and Riff 2 are going to occur. So i am not 
gonna tell ya =0)....this is the kind of scaley part...very easy

Riff 3
G|——————————————————————|
D|——————————————————————|
A|——————————————————————|
E|4—3—2—1—0——4—3—2—1—0——|

after that is played for a bit play this:

Riff 4
G|———————————————————————|
D|———————————————————————|
A|———————————————————————|
E|7h9—7—7—9—7—9—9—9—7h9——|

Then go back to Riff 1 and make the nessicary switches between Riff 1
and Riff 2.
Im not sure if this is completly right cause i have done it off the top 
of my head....But i know its *** close