once you figure out which strum pattern works for you, you should get it.

this is pretty much how it goes:

intro:
9-10/12---9-10/12---9------9-10/12---9-10/12------------------------|
-------10---------12--------------10--------12-10-------------------|
--------------------------------------------------------------------|
--------------------------------------------------------------------|
--------------------------------------------------------------------|
--------------------------------------------------------------------|
............
verse and chorus:
----------------------------------------------------------------------|
---7----9-----10------------7----9-----10-----------------------------|
---7----9-----9-------------7----9-----9------------------------------|
---7----9-----11------------7----9-----11-----------------------------|
--------------9------------------------9------------------------------|
---7----9-------------------7----9------------------------------------|