Feisty Remote install

[Mike Smith]

This page http://www.ubuntu.com/news/ubuntuserver704 says...
"Secure remote network installation: Administrators who aren't
physically where their server is can securely install Ubuntu using a
remote SSH terminal."
I can't find anything in the current server install that would allow
me to start ssh/get an ip to allow a remote install. Is it something
you type at bootup?

Thanks,
Mike