It's two displays coming out of the one graphics card. VGA and DVI.
Yeah, I could install as a VM guest. But then two things.
1. I don't really want to use Windows. I want to use Linux, I'm keeping Windows around so I can occasionally play DayZ with my son.
2. Because I'm interested in Penetration Testing, and one of the courses I want to do in the field (written by the very same people who maintain Kali) involves using virtual machines, I'd then be trying to run a VM inside a VM and I'm told this is not possible.
I could also run a live DVD, but like I say. I want to use it as my main OS. Not an after thought.