A: 577655
F#m: x-9-11-11-10-9
B: 799877
I think it's mostly just Em A F#m B all the way thru.
(although in the chorus maybe use A7 instead of A)
The main riff goes something along the lines of:
Em A F#m B
E|--7------------------------------|
B|-----8--7--7--8--10--10----------|
G|-------------------------9/11----|
D|---------------------------------|
A|---------------------------------|
E|---------------------------------|