Instrumental jam.....

Main riff (sometimes to improvise hit D open instead of A)
G|------------------------------------------------|
D|------------------------------------------------|
A|----------------0-------------------------------|
E|-5\-2h3-x-2h3-3--0h2h3-3-x-2h3/5-5\-2h3-x-2h3-3-|
B|------------------------------------------------|

Improv
G|-------------|--------------|
D|-4h5-2-2/4---|--------------|
A|-----------5-|--------------|
E|-------------|--------------|
B|-------------|-2-3-5-4-3-2/-|

Solo (kinda)
     x2
G|-----------|------------------------|
D|-7-7-7-5---|-5----------------------|
A|---------7-|---7-5h7p5-5------------|
E|-----------|-------------7--7-5-x-5-|
B|-----------|------------------------|

There ya have it. I think near the end, you hit the A as a barre chord.