This is how my band plays it. I tmay be right it may be wrong. It sounds good though.

Main riff
f|-----------------------------------|
c|-----------------------------------|
g|-----------------------------------|
d|-0--4--0--4--0--4------------------|
and so on......
then 2x
f|-----------------------------------|
c|-----------------------------------|
g|----9-9/12-12-15-14----------------|
d|-0---------------------------------|
then the main riff a few more times
then
f|-----------------------------------|
c|-----------------------------------|
g|-----------------------------------|
d|--0--2--2--------------------------|

f|-----------------------------------|
c|-----------------------------------|
g|-----------------------------------|
d|-4-4-4-4-00-0-0--------------------|
S S S S SS S S
S=slap

These are the only riffs in the song. Of course the slap is not completely
necesary but if done right it sounds much better. E-mail comments to me at
patcoffey2@hotmail.com