I'm developing a website inside a Ubuntu Karmic VirtualBox machine. I've got some of the front-end design done, and I wanted to test it in some other browsers, so I downloaded Microsoft's Internet Explorer Application Compatibility VPC Images. I loaded one of these machines in VirtualBox, but while they would initially run, they consider VirtualBox to be a different machine from the VirtualPC they're accustomed to, which triggers Windows' activation lockdown, rendering the machines useless. This means I'm forced to run the IE machines in VirtualPC.
When I tried starting VirtualPC while my VirtualBox machine was running, the VirtualBox instance crashed hard. Apparently the two VMs don't play nice together.
I tried converting my existing VirtualBox into a VHD for VirualPC, but although it makes it to GRUB, the operating system refuses to load.
Is there any way to massage VirtualBox and VirtualPC into playing nice together, or is it simply impossible due to the way these programs work?