This is a very easy riff to learn, it is 95%-100% correct. 
PLEASE RATE

E¦--------------------
B¦--------------------
G¦--------------------
D¦--------------------
A¦--------------------
E¦--0-0-2-0-3-0-5-3--- x20
    1 & 2 & 3 & 4 &

E¦---------------------------------
B¦---------------------------------
G¦---------------------------------
D¦---------------------------4-4---
A¦----------2-2--------------2-2---
E¦----------0-0--------------------
  1 & 2 & 3 & 4 &  1 & 2 & 3 & 4 &

E¦---------------------------------
B¦---------------------------------
G¦---------------------------------
D¦---------------------------------
A¦---------------------------------
E¦---------------------------------
  1 & 2 & 3 & 4 &  1 & 2 & 3 & 4 &

E¦------------------------------------------------------------------
B¦------------------------------------------------------------------
G¦------------------------------------------------------------------
D¦------------------------------------------------------------------
A¦------------------------------------------------------------------
E¦0-0-3-0----------3-3-5-3----------0-0-3-0------------------------- X2
  1 & 2 & 3 & 4 &  1 & 2 & 3 & 4 &  1 & 2 & 3 & 4 &  1 & 2 & 3 & 4 & 

Thats it, you'll get the hang of it really quickly. please rate as this
is my first 'song' I have tabbed.