This is a great song, with a very simple lead. The following is how you would play the 
with a dedicated lead guitar.

e|--------------------------------------------------------------------------|
B|--3--3--3--3/5/7--7--7--8--7\3--------------------------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
A|--------------------------------------------------------------------------|
E|--------------------------------------------------------------------------|

If you just have one guitar, this lead is also simple to play while you play the rhythm 
the same time. Being that the correct rhythm is simply "D" and "Bm", a few re-arranging 
the fingers is all you need to do.

e|--------------0--2--2--2h3p3----------------------------------------------|
B|--3--3--3--3--------------------------------------------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
A|--------------------------------------------------------------------------|
E|--------------------------------------------------------------------------|