This is the intro riff that starts out the song and repeats itself throughout.

--------------------------|
----------------------6---|
-4-x-4—7-4----4-x-4-7---2-|
-----------7--------------|

--------------------------|
----------------------6---|
-4-x-4—7-4----4-x-4-7---2-|
-----------7--------------|


or you could try :
----------------------------|
------------------------4---|
2-x-2--5--2----2-x-2--5---0-|
------------5---------------|

----------------------------|
------------------------4---|
2-x-2--5--2----2-x-2--5---0-|
------------5---------------|