Ghost multicast image server

I have just created an image server so that myself and other technicians can boot from the ghost 10 CD, map a network drive and image pcs from anywhere on the network. This is great, however, I would like to make my server multicast and be able to push images out to pcs. I’ve heard this is possible. Can anyone tell me what I need to do to get this started? I am using Ghost 10 but also have a copy of ghost 2003. Any insight or experience would be really appreciated. Thanks for any help!