Don't get to discouraged with the responses to your request for help. Actually, everyone is trying to help you start your MP adventure in the right way. MP is hard enough to get working right, MMOG is a gigantic effort.

Take the advice given. Set aside your MMOG for now. Start with something small in MP. Study Locoweeds tutorial. Get a chat working, get some movement going, conquer the latency and bandwidth issues associated with MP and the internet. Once you've got a solid understanding of MP then begin again on your MMOG idea.