My inability to do much at all with HTML prevents me from showing which chords go where but my hope is that this will be of some help.
Here are the chords in order for one verse:
Am, Dm, Am
F, G, Am
Am, F, Am
Am, G, Am
The KT did it a little differently and switched to a major key at the point where the two rode off together and then switched back to a minor at the moment of the landslide. It was a nice effect. I have not heard it done by anyone else that way.
In this key you would alternate between C and B-flat for the entire verse.