this is one of my favorites. The chord set up is the majors of D, being A, G, and D.
the main idea:
Amajor (slight play on minor) G, D, G.
I'm at work so I'll give you what I can now and some more variations later.
main chordal lick:
A G D G
E---5----5-----------
B---5----5-----------
G---5h6--6--4-4-7-7--
D---7-------5-5-5-4--
A-0------------------
e--------------------
I have to go I'll give variations and the chorus later.