Version 1 (http://www.youtube.com/watch?v=xorWgC8vf3I)
E|-----------------------------------------------------------------------|
B|-----------------------------------------------------------------------|
G|-----------------------------------------------------------------------|
D|------6---------6---------6---------------6---------6---------6--------|
A|----9---9-----9---9-----9---9-----------9---9-----9---9-----9---9------|
E|-7---------8---------9---------2-2/7-7---------8---------9-------------|

E|------------------------------------------------|
B|------------------------------------------------|
G|------------------------------------------------|
D|----------6----6----6----6----6----6----6----6--|
A|----------9----9----9----9----9----9----9----9--|
E|-2-2/7--7-7--7-7--8-8--8-8--9-9--9-9--9-9--9-9--|

            |This...    |  ...can also be played as this
E|----------|-----------|     |-----------|
B|----------|-----------|     |-----------|
G|----------|---8----8--|     |-----------|
D|---6----6-|---11---11-|     |---1----1--|
A|---9----9-|-9-9--9-9--|     |---4----4--|
E|-7-7--7-7-|-----------|     |-2-2--2-2--|


E|---------------------|
B|---------------------|
G|---------------------|
D|---6----6----6----6--|   Repeat from beginning
A|---9----9----9----9--|
E|-7-7--7-7--8-8--8-8--|


Version 2 (http://www.youtube.com/watch?v=YBox8BPHfiU)
This version, I noticed, is in a slightly lower key and must be played 1 fret lower for 
the whole song, like such:

E|-----------------------------------------------------------------------|
B|-----------------------------------------------------------------------|
G|-----------------------------------------------------------------------|
D|------5---------5---------5---------------5---------5---------5--------|
A|----8---8-----8---8-----8---8-----------8---8-----8---8-----8---8------|
E|-6---------7---------8---------1-1/6-6---------7---------8-------------|

E|------------------------------------------------|
B|------------------------------------------------|
G|------------------------------------------------|
D|----------5----5----5----5----5----5----5----5--|
A|----------8----8----8----8----8----8----8----8--|
E|-1-1/6--6-6--6-6--7-7--7-7--8-8--8-8--8-8--8-8--|

            |This...    |  ...can also be played as this
E|----------|-----------|     |-----------|
B|----------|-----------|     |-----------|
G|----------|---7----7--|     |-----------|
D|---5----5-|---10---10-|     |---0----0--|
A|---8----8-|-8-8--8-8--|     |---3----3--|
E|-6-6--6-6-|-----------|     |-1-1--1-1--|


E|---------------------|
B|---------------------|
G|---------------------|
D|---5----5----5----5--|   Repeat from beginning
A|---8----8----8----8--|
E|-6-6--6-6--7-7--7-7--|