I have worked on this tab for a while and I can tell you it is 99% correct. I
believe it is 100% but lets not be too sure. This is my first tab but I am   
pretty sure it's correct. I saw that the other tabs weren't very accurate 
either, and this one is should sound good. Enjoy!

VERY BEGINNING

e|---12---11---------9--------------------|[2x]   |---| 
B|-------------12---------7----9----12--9-|  Pick |---| repeatedly in between
G|-9----9----9----9----9----9----9--------|       |-9-|
D|----------------------------------------|       |---|
A|----------------------------------------|       |---|
E|----------------------------------------|       |---|

CLAPPING PART

e|---------------------|
B|---------------------|
G|---------------------|
D|-2--2--2--2--2--2--2-|
A|---------------------|
E|---------------------|

INTRO RIFF - I'm not too sure about this part, but it goes something like this.

e|-------11----14--11--11--11--11-|  e|----7--11-----14--11--11--11--11-|
B|-9--9-----9---------------------|  B|-9---------9---------------------|
G|--------------------------------|  G|---------------------------------|
D|--------------------------------|  D|---------------------------------|
A|--------------------------------|  A|---------------------------------|
E|--------------------------------|  E|---------------------------------|

e|-------11----14--11--11--11--11-|  e|-------11----14--11--11--11--11--|
B|-9--9-----9---------------------|  B|-9--9-----9----------------------|
G|--------------------------------|  G|---------------------------------|
D|--------------------------------|  D|---------------------------------|
A|--------------------------------|  A|---------------------------------|
E|--------------------------------|  E|---------------------------------|

e|-------11----14--11--11--11--11-|  e|----7--11-----14--11--11--11--11-|
B|-9--9-----9---------------------|  B|-9---------9---------------------|
G|--------------------------------|  G|---------------------------------|
D|--------------------------------|  D|---------------------------------|
A|--------------------------------|  A|---------------------------------|
E|--------------------------------|  E|---------------------------------|

e|-------11----14--11--11--11--11-|  e|-------11----14--11--11--11--11--|
B|-9--9-----9---------------------|  B|-9--9-----9----------------------|
G|--------------------------------|  G|---------------------------------|
D|--------------------------------|  D|---------------------------------|
A|--------------------------------|  A|---------------------------------|
E|--------------------------------|  E|---------------------------------|

I will work on the rest of the song but I can tell you that this part is 
pretty correct. This is a great song and I want people to play it right.
Tell me if anything is wrong and please rate 5 stars so others can see. 
Thanks!