I suspect that within one year no matter wha thappens, there will be no more big yellow box. The company will be broken up it will be sold off, but it’s not going to be a year from now what it is today." - George Conboy of Brighton Securities.
Sorry - just got on Google+ now they've incorporated into Google Apps. I've setup up countless domains for mail hosting on Google Apps. They've changed things up a bit but you can start at http://www.google.com/apps/intl/en/group/index.html. They walk you through it.