Frédéric,
As I mentioned, I use cloning/sysprep. I did have a MCSE on site once to setup a PC lab for some NT training. The instructor used a diskette that held all the individual settings. All he needed was to pass one parameter to the install and the rest was automatic. All that with just batch files and MS tools.
I'm sure you could probably use a mix of CD and floppy to do just that.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.