[CentOS-virt] Can KVM be run "headless"?

I own a few headless centos servers running kvm. Vnc-server is probably
easiest to setup to access the server's desktop. Or use ssh if you don't
want a gui desktop on the server.

I use the ultravnc viewer on my windows PC to access centos.

Linux vm guests can run vnc as well, and windows vm guests have remote
desktop, of course.

SPICE is a new way to access guests, but I haven't figured out how to use it
yet...