There aren't many riffs in this song but they do get varied a bit
but what we have here should be enough to get the idea.
I hope this is correct - typing these tabs in without a guitar 
handy is a bit of a pain.
As usual the solo's are too tricky for me to work out.


Slow main riff (well as slow as it gets)
e----------------------------------------------------------------
b----------------------------------------------------------------
g----------------------------------------------------------------
D---2--------------3-----3-----3-2--------------3-----5-----3----
A---2--------------1-----1-----1-2--------------3-----5-----3----
E---0--0-0-0-0-0-0---0-0---0-0---0--0-0-0-0-0-0-1-0-0-3-0-0-1----


Build up to fast bit
That bit on the end there goes something like that
e----------------------------------------------------------------
b----------------------------------------------------------------
g--------(b9)--(b9)-----(b9)--(b9)-----(b9)--(b9)----------------------------
D--------(b9)--(b9)-----(b9)--(b9)-----(b9)--(b9)----------------------------
A--------7---7------7---7------7---7-5555566677/8----------------
E---0000---0---0000---0---0000---0---3333344455/6----------------


Faster main riff (2 variations)
e----------------------------------------------------------------
b----------------------------------------------------------------
g----------------------------------------------------------------
D---2-------------3----3----3-2-------------3------5-----3-------
A---2-------------1----1----1-2-------------3------5-----3-------
E---0-000-000-000--0000-0000--0-000-000-000-1-0000-3-0-0-1-------


e----------------------------------------------------------------
b----------------------------------------------------------------
g----------------------------------------------------------------
D---2-------------3333-3333-2-------------3-----5-----3----------
A---2-------------1111-1111-2-------------3-----5-----3----------
E---0-000-000-000-----------0-000-000-000-1-0-0-3-0-0-1----------


..and another two riffs that appear in there somewhere and are 
probably missing a few chunks
e----------------------------------------------------------------
b----------------------------------------------------------------
g---2------------------------------------------------------------
D---2--------------------2------7-(b9)7-(b9)-10-(b9)7------------------
A---0-000-5-7-5-8--7-5-3-2------5-7-5-7--8--7-5------------------
E---------3-5-3-6--5-3-1-0-0000----------------------------------


e----------------------------------------------------------------
b----------------------------------------------------------------
g----------------------------------------------------------------
D---4-------------5---5---5-4-------------7--10-(b9)7--------------
A---2-222-222-222-3-x-3-x-3-2-222-222-222-5--8--7-5--------------
E----------------------------------------------------------------

Matthew Johnson.