[ Thanks to Falko
Timme for this link. ]
“This guide explains how you can run virtual machines with
VirtualBox 4.0 on a headless Debian Squeeze server. Normally you
use the VirtualBox GUI to manage your virtual machines, but a
server does not have a desktop environment. Fortunately, VirtualBox
comes with a tool called VBoxHeadless that allows you to connect to
the virtual machines over a remote desktop connection, so there’s
no need for the VirtualBox GUI. “