How to install 10 clients

Is there anyway I can make can make an exact copy of a hard disk on another hard disk, mount the latter back in its original box and it boot as if it were just like the original? I have 10 identical dell multiplex boxes. Each installation via our lan nfs server takes around 90 minutes because I have to setup nis, nfs and choose much of the software by hand. Google is a minefield of ideas. Just wanted something 10.0 specific. Anyone been here? Cheers, Steve.