not sure on this one, but i learnt it by ear....roughly.

its not chords either but its pretty easy i guess and it works for bass too

e--------------------------------------|
b--------------------------------------|
G--------------------------------------| Standard Riff(play a lot)
D--------------------------------------|
A--------------------------------------|
E--0--0--0-0---5--5--5--3--3/5-5-5/6\5-|

Chorus (or instrumental bit after...)
e------------------------|
b------------------------|
G------------------------| X4
D------------------------|
A-----------0---2--------|
E--0--0-2-3---2---3-0----|

e------------------|
b------------------|
G------------------| X2
D--2-0-------------|
A------4-0-2-------|
E------------3-0---|

e------------------------|
b------------------------|
G------------------------| X2
D------------------------|
A-----------0---2--------|
E--0--0-2-3---2---3-0----|


easy.... :)

Fos.