Just picked up a 470, looking to upgrade the cpu in it. Finding information on it is tiring since I'm on dial-up (no high speed in my area). It came with a single 2.8 ghz xeon with ht. I read that the 470s support dual core. What dual core cpus will this mb take and which single core? I've found the 2nd cpu kits on ebay as well as the voltage regulators but not sure which xeons to be lookings for any help is appreciated.