virtualbox.org

I am trying to install windows 2000 sp4 on virtualbox 3.0.2 on windows. I have a Quad Core Pc, i got an old pc, single core epntium 3 very old, i installed windows 2000 on Vbox there and it worked, no provlems, but on my quad core qhen he finishes the 1st part of the instalation, he restart, it looks like be booting win 2000 but at the end came a blue screen saying: Kmode_exception_no_handled.
i dont know what to do anymore! please help!