This is just the first 2 minutes of the song. its the RIGHT way to play the song, i dont know where you guys got that other stuff.

Do this twice :
e------------------------------7---------
B---------5--------------------7---------
G------------6-----------------7---------	{ figure 1
D--4------------7---6---7/4--------------
A--4----------------0--------------------
D--4----------------0--------------------

Then this :
e----------------------------------------
B--3-3---3-3-3-3-3---2-2--2-2-2-2-2------
G--3-3---3-3-3-3-3---2-2--2-2-2-2-2------	{ figure 2
D--3-3---3-3-3-3-3---2-2--2-2-2-2-2------
A--2-2---2-2-2-2-2---0-0--0-0-0-0-0------
D----------------------------------------

Then go back to fig.1, then back to fig.2, then back fig.1, do it 4 times, then do this : 
e----------------------------------------
B----------------------------------------
G----------------------------------------	{ figure 3
D--4--0--4--0--4--0--4--0----------------
A--4--0--4--0--4--0--4--0----------------
D--4--0--4--0--4--0--4--0----------------

Then its back to fig.1, then fig.2 like twice, then fig. 1 a couple times.and then back to fig.3 and its like this for a while. you get the idea. im not bothering with the rest ^_^