RIS Servers

How do people setup their RIS Servers?
Dont worry its not such a broad question as the above, what i mean is do you allow any PXE client to connect to the RIS server or only ones with pre-staged accounts.
Do you tend to have the machine set the computer name according to the first person logged on? Organisation name?
Or if you use pre-staged accounts how do you go about obtaining all the GUID's before hand?
Dont worry its not such a broad question as the above, what i mean is do you allow any PXE client to connect to the RIS server or only ones with pre-staged accounts.
Do you tend to have the machine set the computer name according to the first person logged on? Organisation name?
Or if you use pre-staged accounts how do you go about obtaining all the GUID's before hand?
Foolproof systems don't take into account the ingenuity of fools
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As i know both would work (if setup right of course) just wondered what people did in the 'real world' as it seemed obtaining the GUID for each machine in advance was a bit of a PITA.