Palm Mute
e|-------------------------|-------------------------|
B|-------------------------|-------------------------|
G|-------------------------|-------------------------|
D|-------------------------|-------------------------|
A|-0-3-7-0-3-7-0-3-7-0-3-7-|-0-4-8-0-4-8-0-4-8-0-4-8-|
E|-------------------------|-------------------------|
x2
e|-------------------------|-------------------------|
B|-------------------------|-------------------------|
G|-------------------------|-------------------------|
D|-------------------------|-------------------------|
A|-0-5-9-0-5-9-0-5-9-0-5-9-|-0-4-8-0-4-8-0-4-8-0-4-8-|
E|-------------------------|-------------------------|
[ Tab from: http://www.guitaretab.com/u/ufo/69346.html ]
Now Don't Palm Mute
e|-------------------------|-------------------------|
B|-------------------------|-------------------------|
G|-------------------------|-------------------------|
D|-------------------------|-------------------------|
A|-0-3-7-0-3-7-0-3-7-0-3-7-|-0-4-8-0-4-8-0-4-8-0-4-8-|
E|-------------------------|-------------------------|
e|-------------------------|-------------------------|
B|-------------------------|-------------------------|
G|-------------------------|-------------------------|
D|-------------------------|-------------------------|
A|-0-5-9-0-5-9-0-5-9-0-5-9-|-0-4-8-0-4-8-0-4-8-0-4-8-|
E|-------------------------|-------------------------|
That's it. It sounds right to me.