I came across some tabs for this song and my friend showed me the correct way Morello
plays it. Its a trick anyways. 
Note: This tab is easiest for Stratocaster type guitars with 3 single coil pickups.

The beginning riff: Take something mettalic (key chain, scissors, allen wrench) and scrape
your A string. This is done in standard tuning. Also make sure to scrape the area of your
middle pickup - most likely from about 1/2 inch of left to the pickup to its right edge.
Make sure the selector switch is in the position where it picks up the leftmost pickup 
and the middle pickup. This will work the best. To get the ending note, scrape the string 
for the final time and move ur pick off the string. The Idea here is to produce a sound
for a B and C and then end off at A. The tab for this is:

A|-2-3-2-3-2-0-- Repeat alot.


For the Chorus riff do the same, except on the E string, and then end off on a F power chord
and on a G power chord. As a tab it would look something like this:

D|-----------------3-5
A|-----------------3-5
E|-2-3-2-3-2-3-2-3-1-3

This riff is in there somewhere too, repeat 8 times:

G|---------0-|
D|---------0-|
A|-----------|
E|-5^--7-5---|

Thats about it folks, im pretty sure this is correct. 

For guitars that dont have 3 single coil pickups, youll have to mess around a little
but eventually you'll get it.