But he builds ever PC with the same name, so you have to go round to the pc and change the name of every PC (we have over 500 PCs). we've allready told him we can image the PCs and keep their correct name, so no need to go to every PC.
Use sysprep on the source HDD to be imaged before imaging. This makes renaming PCs easy as, they just request a new Computer Name on startup.