CPU Upgrade

[JohnNada]

Hi,

I have an HP Workstation XW6200, which as far as I'm aware has two single core Intel Xeon 3.4Ghz processors. I really don't know anything about processors, and would like an upgrade. As a video editor, I've just started working with full HD footage, and my current setup really can't cope with it too well. I'd appreciate it if somebody could advise me on what I need to consider before upgrading. Like I said, I really don't know anything about processors, so please break it down for me in newbie friendly language. If possible, I'd like to have two quad core processors, but I'm not sure what socket type I need, or what else I need to consider before buying new processors. Please advise...

Thanks