Don't know about the specific mounting for a fan on that HS, but generally to mount the HS to the mobo you simply bolt the CPU into the socket, then place the heatsink on top with the "ledge" of the heatsink going over the "ledge" on the socket.
Attach the lower three-holed bracket to the bottom of the socket, then use a flathead screwdriver to force the other side down onto the top of the socket. It may feel like you're pushing too hard at first, but you need to give it a good amount of pressure.
Check the AMD site, I think they have a detailed .pdf with pics