About Virtual Machine

Hi,
I am installing Windows 2000 and Windows 2003 Virtual Machines on my pc.I am using Microsoft Virtual PC 2004. When I try to install Windows 2000 I gets error message “An Internal Setup Error Has Occurred
Cound Not Find A Place For a Swap File
Setup Cannot Continue. Press Enter To Exit.”
Can someone assist me how to install Both Virtual Machines.
Thanks.
Anurag.