Okay, I see what you are getting at!
I will get some links posted here, another guy is looking for upgrade info as well, so I can help two at once!

Start, though, by going to the AMD site, they have sections on different types of Mobo's, so maybe you can pull up some stuff on Dual processor boards, here is a forum, http://forums.amd.com/ ,I Think http://www.amd.com/us-en/ is the main site and FAQ http://www.amd.com/us-en/Processors/...82_861,00.html