this is played throughout the whole song except u cant really here it in the chorus but its the right way to play it. Its not played on guitar I 
know but its a sick song

E|--------------------------------------------------|
B|--------------------------------------------------|
G|-----------------------------------------------|
D|----------------------------------------------|
A|----0-7-5-3---0-7-5-3---0--7-5-3--0-7-5-3------------------------------------|
E|-------------------------------------------|



E|--------------------------------------------------|
B|--------------------------------------------------|
G|-----------------------------------------------|
D|----------------------------------------------|
A|---0-7-5-7-8-10-7---3-5-2------------------------------------|
E|-------------------------------------------|

and there you go Eminem's 8 Mile road off the 8 Mile Soundtrack I hope u liek it