Famous Intro Tab

Hey guys.  I'm kinda new to playing guitar (only 3 months), but I have been working for
past 2 days to try and figure out this song.  So far I have figured out half of the
 This is going to be a group project.  This is all I could figure out from watching
live videos, and listening to the song over and over again.  So if you can contribute to
tab, please leave a comment and I will edit the tab.
 
And if anyone can, please post an accurate and complete tab for this song.
 
Thanks
 
And without further ado, here is what I have tabbed up:
 
Drop D Tuning
 
e|--------------------------------------------|
B|--------------------------------------------|
G|-11----11---11---12---12---12----12----12---|
D|-0---0---0----------0----0----13----13------|
A|--------------------------------------------|
D|--------------------------------------------|
 
That's all I know for now.  I'm 100% sure the frets are right, but I'm not 100% sure on
picking.  I know I messed up a little there.  But pretty much after you figure out where
start its easy to keep going.
 
So somebody please make an awesome tab for this song.  There are no guitar covers of
song on Youtube or any video site, and the only other tab of this song on here
sucks.
 
But again, contribute what you can.
 
Thanks
-Matt
X