The FS1b (AM1) boxed cooler is pretty easy to install. There are two Intel-esque push pins that you poke through the board and then push down on the tops of the pins. Not too tough. There are also screw-down (similar to a server) FS1b cooler designs as well. All you do is push the screw into contact with the backplate, give it a few turns, and you're done.
As far as I am aware there are no aftermarket FS1b coolers available yet.