Can I simulate a virtual Dual-Head Graphiccard?

[Axel Kittenberger <axel.kittenberger@univie.ac.at>]

Hello,

This is a question I was not able to answer with a search. I've been 
using kvm now quite successfully as server side solution. Now I want to 
use it on a particular desktop to have a Windows 7 Guest on a native 
Linux system. Well this desktop has two Screens, and I'm sure its 
expected to have the Guest also on both screens.

Supposevly I could just simulate a very wide Screen and have the host 
split it (either SDL or VNC). However, this is not quite the same, as 
the guest will think exactly that, 1 wide screen. Meaning it will put 
all the messageboxes exactly in the middle between the two screens, have 
the startbar spawn on both screens and what not. So two screens are 
handled a tad differently than one wide.

Is this possible with kvm?
Either simulate a dual head mapping to one wide SDL/VNC display. Or 
having two SDL/VNC displays?

Kind regards,
Axel Kittenberger