the quickest way i know is create 1 working system.. tar up the files (not the root '/' directory, remount your root partition to another fs like /mnt/root) and copy it to another fs. you can use a livecd to transfer the files within a network. another option is that you can also use 'dd' to create an image of your partition. basically it's like this:
dd if=/dev/hda1 | gzip -9 -c > /pathtoothersys/hda1.gz
You can add more options to dd like 'bs=2M' or 'bs=8M' to speed up the copy operation.
Whether you use gz or bz2, it's just optional. I prefer gzip than bzip2 when it comes to larger files.
As more and more machines get the copy of the system, more and more copies can be made at a time .. for example it starts at 1 then became 2 then became 4 .. you know what i mean..
The configuration part is different though. Perhaps before you copy a working system.. Make sure the common configurations are already setup.