im pretty sure this is it, let me know what u think
/:slide up
\slide down riff 1
e________________________________________________________________
b________________________________________________________________
g________________________________________________________________
d_5_____5_____5_3_3_____3_____3_3_3_____3_____3/6_6_____6_____6\_
a_6_6_6_6_6_6_6_6_6_6_6_6_6_6_6_3_3_3_3_3_3_3_3/6_6_6_6_6_6_6_6\_
e_3_3_3_3_3_3_3_3_3_3_3_3_3_3_3___0_0_0_0_0_0_0___0_0_0_0_0_0_0\_
riff 2
e________________________________________________________________
b________________________________________________________________
g___________________________________________________5_5__________
d_5_____5_____5_3_3_____3_____3_3_3_____3_____3_6_6_6_6___6\_____
a_6_6_6_6_6_6_6_6_6_6_6_6_6_6_6_3_3_3_3_3_3_3_3_6_6_____6_6\_____
e_3_3_3_3_3_3_3_3_3_3_3_3_3_3_3___0_0_0_0_0_0_0_0_0_____0________
its the same for verses 1, 2,and 3 accept you play riff 1 twice
then riff 2 once then riff 1 once
[ Tab from: http://www.guitaretab.com/p/powderfinger/14985.html ]