I was checkin the other tab for Serenity. It's good.. but there are flaws.. 
Namely, the main riff is a bit off. Here it is from my point of view. 
Remember, Drop D, folks.

E-----------------------------------------
B-----------------------------------------
G-----------------------------------------
D-----------------------------------------
A-----4-4-4-4-4-4-------------------------
D----0-0-0-3-6-3-0------------------------

Repeat that a few times and to end the riff play up to where you hit the 
6th fret on the D string and let it ring. Then you start over.

The bridge goes like this

E-----------------------------------------
B-------4-2---42-----2-0---20-------------
G---1-1-----1---1--0-----0---0------------
D-----------------------------------------
A-----------------------------------------
D-----------------------------------------

Repeat that a few times and back to the main riff.

I'd say it's pretty accurate. 
Feedback would be great, if you don't feel like sayin it here, 
try trumpet_dude90@hotmail.com