From: guitarjt
This is my first tab!

Riff 1
E|---------------------------------------------------------------------------------|
B|---------------------------------------------------------------------------------|
G|--------------------77--99--------------------77--99--------------------77--99---|
D|--7-7-7-7-7-7-7-7---77--99--7-7-7-7-7-7-7-7---77--99--7-7-7-7-7-7-7-7---77--99---|
A|--7-7-7-7-7-7-7-7---55--77--7-7-7-7-7-7-7-7---55--77--7-7-7-7-7-7-7-7---55--77---|
E|--5-5-5-5-5-5-5-5-----------5-5-5-5-5-5-5-5-----------5-5-5-5-5-5-5-5------------|

E|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|-------------7-7-7-7-------------------------------------------------------|
D|-----7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7---------------------------------------|
A|-----7-7-7-7-5-5-5-5-7-7-7-7-7-7-7-7---------------------------------------|
E|-----5-5-5-5---------5-5-5-5-5-5-5-5---------------------------------------|

Riff 2
(Hey Ho! Lets Go!...)
E|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--------------------------------------------------------------------------|
D|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-------------------------------------------|
A|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-------------------------------------------|
E|--5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-------------------------------------------|

Riff 3
E|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-----------------7-7-----------------------|
D|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-----------------|
A|--5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-7-7-7-7-7-7-7-7-5-5-7-7-7-----------------|
E|--------------------------------5-5-5-5-5-5-5-5-----5-5-5-----------------|

E|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-----------------77---9-9-9-9--------------|
D|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-9-9-9-9-9-9-9-9-77---9-9-9-9--------------|
A|--5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-9-9-9-9-9-9-9-9-55---7-7-7-7--------------|
E|--------------------------------7-7-7-7-7-7-7-7---------------------------|


That's the way I play it and it's pretty easy.