ok so heres the arpeggio i learnt off PG.

E|-15p12------------12-15p12-------|    you can move it around and make some
B|---------------------------------|    pretty cool sounding stuff.
G|------16p12--12-16--------16p12--|
D|-----------14------------------14| 
A|---------------------------------| 
E|---------------------------------|


E|----------9h12h14p12p9----------|     once youve mastered the first 
B|--------------------------------|     arpeggio you can then try this
G|---9h11h14------------14p11p9---|     one.
D|--------------------------------|
A|-12--------------------------12-|
E|--------------------------------|

E|----------9h12h14h17p14p12p9----------| then once that one is mastered you
B|--------------------------------------| can then try adding in a right 
G|---9h11h14------------------14p11p9---| hand hammer on.
D|--------------------------------------|
A|-12--------------------------------12-|
E|--------------------------------------|