install with no physical access?

[Tom Horsley]

I've found it very convenient to install fedora on systems which have an
existing grub already installed by copying the vmlinuz and initrd.img
files to /boot and making an "Install Fedora" grub entry pointing at them
(I can then tell the installer to do a hard disk install pointing to
the DVD iso image on a local disk).

Now I want to go one step farther - do the same thing over a VNC connection
when I have absolutely no physical access to the machine I want to install on.

I see some stuff in the installation guide about running installer over VNC,
but it is talking about typing things in to the console. Is it possible to
put enough kernel options in the grub entry to define the network and
tell it to speak VNC? (And if so, what the heck happens after it does the
first boot? Is it still talking VNC after that?).