This isnt a real gnr song, but Slash play it as intro on a live
version of Knockin' on Heavens door. (Its a alice cooper song)
The timing isnt perfect so lissen to the song and you'll
 get it right. you can find it on audiogalaxy

Chords
 G     A     Am    G
-7-----5-----5-----3----------------------
-3-----2-----1-----0-----------------------
-0-----0-----0-----0-----------------------
----------------------------------------
-----------------------------------------
----------------------------------------

alright!
 G
---7-----7--------------------
-----3-----3---3--------------
-0-----0-----0----------------     X2
----------------------------
----------------------------
-------------------------

 A
---5-----5-------------------
-----2-----2---2---------------
-0-----0-----0---------------      X2
-------------------------
-------------------------
--------------------

 Am
---5-----5-----------------
-----1-----1---1------------
-0-----0-----0--------------
----------------------
-------------------------
----------------

 Am
---5-----5---5s7--------------
-----1-----1---------------
-0-----0-------------------
----------------------
-------------------------
----------------
 G
---3-----3-----3-----------
-----0-----0---------------
-0-----0-----0------------         X2
---------------------
------------------
------------------

Second Time:

 G
---10-p7---7-------------------
---------8---8---8-------------
-0-------------0---------------    X2
-------------------------------
-------------------------------
--------------------------------
And the rest (A, Am, G) - Same as above.


NOte: Slash does a lot of bends and stuff,
this is just the basic chords and a easy picking example,
so dont blame me if its not 100% right