Tabbed by Peter Reilly 

Chords used:

Intro/Main riff
e------------------------               e-------------------
B------------------------               B-------------------
G------------------------  x3 and then  G-------------------
D----------2-2-----------               D-------------------
A--2-4-2-4-x-x-4-2-------               A--4-4-4-4-7-7-7-7--
E--0-0-0-0-0-0-0-0-3-2-0-               E--2-2-2-2-5-5-5-5--

This riff bears more than a passing resemblance to "Get it on" by * methinks...