ive only get the lead part on the intro and ive only got the rythem on the chorus so 
look at the other tabs for those
i honstly have no idea what-so-ever where there is a third guitar so i didnt include it
*=palm mute
b=bend
^=let ring
x=string mute
\=slide

intro(x2):

both guitars                                      lead only:
e-----------------------------------------------|-------12---|---14---|----|
b-----------------------------------------------|---------10-|x4---12-|x4--|
g-----------------------------------------------|--------------------------|
d-----------------------------------------------|--------------------------|
a-00--9b9b--00--9b9b---0000--11b11b--00--11b11b-|--------------------------|
e-00--------00---------0000----------00---------|--------------------------|
  **
verse(keep playing this til the "i always knew" part...im not sure how many times):

guitar 1:
e--5^----5---5^-|
b--4---44--44---|
g--4---44--44---|
d---------------|
a---------------|
e---------------|

chorus(guitar 2 only):
e-------------------------------------------------|
a-------------------------------------------------|
g-------------------------------------------------|
d--7-777-xx-1111-910-|---11111111-11/9--9999-9/7--|
a--5-555-xx-9-9--7-8-|---9-9-9-9--9-/7--7777-7/5--|
e--------xx----------|x2--------------------------|
(this part is really hard at first...the trick is to play it really fast once u get the 
chords down. but to avoid frustration play it slow first.)
verse:

guitar 1:
e-----55-|
a--44-44-|
g--44-44-|
d--------|
a--------|
e--------|play until "i always knew" (again)

guitar 2:
e---------------|
a---------------|
g---------------|
d---------------|
a--777777777777-|
e--555555555555-|play until "i always knew" (as u may have guessed)

(play chorus again)


bridge:
e------------------------------------------|
a------------------------------------------|
g------------------------------------------|
d------------------------------------------|
a--00003-030033-000030300033--55555-5-5-55-|
e--00003-030033-000030300033--55555-5-5-55-|x2
   ***** ****** ************  ************
(play a secound time without palm mute...then play the first part of the intro 
again...after that play the chorus again...and youre done ^.^)