firstboot configuration via VNC possible?

Hi,

Can the 'firstboot' configuration be performed via VNC?

Background:
*I completed an installation using the 'vnc' option of a server/desktop that includes the Gnome desktop environment
*upon reboot, the 'firstboot' configuration scripting is run
*it doesn't appear to be running a VNC server permitting me to continue my fully remote installation

Is this an anomaly (i.e. it should have started a vnc server allowing me to continue the configuration remotely)
Or is this something is already documented (if so, would you mind sharing the location)?

Many thanks!

John Miles.