Virtualization with VirtualBox, VMware server and KVM on Debian Squeeze

Virtual Box 4.0
http://www.howtoforge.com/vboxheadless-running-virtual-machines-with-virtualbox-4.0-on-a-headless-debian-squeeze-server

http://www.virtualbox.org/manual/ch07.html#vboxheadless


VMware Server 2.0
http://www.troublenow.org/316/installing-vmware-server-2-0-2-on-debian-6-0-1-x64/

KVM
http://www.palegray.net/tutorials/debian-6-kvm-howto/

http://www.howtoforge.com/virtualization-with-kvm-on-a-debian-squeeze-server

http://www.howtoforge.com/virtualization-with-kvm-on-a-debian-lenny-server

connect to Headless VM using VNC

http://www.linux-kvm.com/content/tip-how-run-headless-guest-machine-using-vnc-kvm