Main riff: Play with slight bends on the pull offs.
               p.o.       p.o.       p.o.       p.o.
E----------------^----------^----------^----------^-----------
A------0-------3--0-------3--0-------3--0--0------------------
D------0-------------0----------0-------------0-0--0----------
G------2--------------------------------------2-2--0----------
B------3--------------------------------------1-1--0----------
e-------------------------------------------------------------
     (dsus2)

E-----2-----3-----4----0---------       
A--------------------------3---5-
D--------------------------------
G--------------------------------
B--------------------------------
e--------------------------------        all this x3 then

               p.o.        p.o.      p.o.     p.o.        p.m.
E----------------^----------^----------^-------^-------3333--3333
A------0-------3--0-------3--0-------3--0--0-----------2222--2222
D------0-------------0----------0-------------0-0--0---0000--0000
G------2--------------------------------------2-2--0---0000--0000
B------3--------------------------------------1-1--0---0000--0000
e------------------------------------------------------1111--1111
     (dsus2)                                             (g7)
 
                    (2 Bars)       (1 Bar)          (1 Bar)
Verse: Chords-----D5-----------E------------Eadd#11--------------

E-------------------------------------------------------------------- 
A-----------------2------------2--------------2---------------------- 
D-----------------4------------2--------------2----------------------
G------------------------------1--------------3---------------------- 
B--------------------------------------------------------------------
e--------------------------------------------------------------------

Then straight back into the main riff part for the chorus, then another verse,
then another chorus, then:

Interlude: Just mess about in the D pentatonic or major scale (songs in D) it'll
sound vaguely similar and will fit in whatever you do.

E--------7------------------10----		E------7------9---10----
A--------7------------9-----------		A------7------9---10----
D--------7------------9-----------		D------7------9---------
G--------7------------9-----------		G?-6---7------9---------
B--------7------------------10----		B------7---8------10----
e--------7------------------10----		e------7------9---10----

DMajor (xx0232@1)Pentatonic				DMajor (xx0232@1)Full (Ionian)

Just mess about with these and some chords in 'D' e.g. d, d7, dsus2, e, etc. Then 

		H.O.		GE------------^-----5-------xxxxxxx?2----3----4----5---------- (320003@1)A----------3---5-------5--xxxxxxx--------------------6---7--
D------------------------------------------------------------
G------------------------------------------------------------
B------------------------------------------------------------
e------------------------------------------------------------x4
Finally, the subtle change to the main riff is:

               p.o.       p.o.      p.o.    p.o.  p.o.
E----------------^----------^----------------------------------
A------0-------3--0-------3--0--------^------^------^----------
D------0-------------0----------0---3--0---3--0---0--0---------
G------2------------------------------------------2--0---------
B------3------------------------------------------1--0---------
e--------------------------------------------------------------
     (dsus2)

E-----2-----3-----4----0---------       
A--------------------------3---5-
D--------------------------------
G--------------------------------
B--------------------------------
e--------------------------------  

add this in every other bar on the final chorus (listen to the cd).

Then final thing:

		    gE------------------- (355333@1)A------9999x9999---
D------8888x8888---
G------9998x9999---
B-------------------
e------------------- 

KEY:
p.o. = pull off
h.o. = hammer on
g    = gliss (slide)
p.m. = palm mute  

Sounds best with high distortion with the bridge pickup.
If you like it e-mail me at sravenscroft@woottonbassett.wilts.sch.uk