Hi Steve,
About a month ago, my server crashed. MotherBoard problem.
At that time I went crazzy. The all LAN was stoped, because my SME box is the center of it. The services are: webhosting, email server, file-server, ftp server, and Domain Controller.
I look arround and thought: Where can I get a motherbord? Because I dindn't had one, I decided to do something strange. I picked the 4 IDE discs from my dead server ( P II 400MHz ) and inserted them in mine personnal PC ( ATHLON XP 2.1ghZ ) and it started just fine with all the services I was runing, but in a total diferent machine. The only component equal in the two machines was the network card.
So I think that if you install SME in an ordinary computer, then you can put the disc on your future server and boot him up. The only advice that I can think of is about the network card. Try to install the SME with the network card that you are going to use in the keyboadless machine.
Hope I didn't bored you with my story, but I think that is a real good exemple of the real good work that is being made by the SME devellopers.
Have a nice fight

and if you test it, then let us know... ok?
Cheers
Gabriel