Ghosting Process Clarification - Win XP

Hi,

I am after some clarification on the ghosting process. I have about 200 machines i need to ghost from a reference machine.

I am clear on the whole idea of setting up the machine and using sysprep to get the machine in a state ready to create a disk image, but then i am a little unsure of the steps after that. (i have googled, and looked through experts-exchange and not found what i am looking for)

Once sysprep has shutdown the machine... could someone clarify the following

1) boot system into dos - what cd do i use? Norton Ghost CD? is there a free alternative to boot into at this point
2) create the disk image using Norton Ghost - can this be burnt directly to a CDR WHILST booted into Norton Ghost or Alternative, or do you then need to boot into windows once the disk image has been created, and then burn it to disc using something like nero?

To ghost to destination machine
----------------------------------
1) Boot using the CDR with the ghost image burnt on it
...

Sorry, but i am new to ghosting. And the final steps just are not entirely clear.

I have 200 machines to do in a School, i have read of people doing 500 machines in a day... how is this done so quickly? by burning a large run of discs to do a number of machines simultaneously?