I'm been running the same XP install since 1/11/2004 as my primary machine. It has run on several mother board/cpus and been cloned across HD's numerous times too. It's going to be very difficult to give it up. I have a Vista and a Win8 boxes hooked up to the kvm here at the desk but the XP box is like an old friend.
It's such an epic security risk, I can't understand why you'd want to risk using XP?
Its firewalled and scanned regularly, browse with Chrome, careful with emails and downloads, so far so good? I don't do anything anything critical on it anyways. It will be retired soon though.