first tab here, i think its drop D tuning.
(intro with some effect er something)----------------------------------|----------------------------------|----------------------------------| (x2)----------------------------------|--------6-66-66-66-6-6666---------|----------------------------------|
(intro thing cont./ verse)--------------------------------------------------|--------------------------------------------------|--------------------------------------------------|-------0--0--3-3-3-3---333-xx-5-5-555-666-5-------|-------0--0--3-3-3-3---333-xx-5-5-555-666-5-------|
put some variations into the verse thing, but that sounds like the right to me