How do I change my computer name inside the registry so that it wont crash?

I need to figure out how to change the 'computer name' from inside the registry. I would like to add numbers next to the 'computer name' to keep track of them. For example: Computer1-01234, Computer2-01235, Computer3-0123456. I have 30 computers on a domain and they all require the user to log in so I need to figure out the best way to do this without crashing the systems.  - Thanks
techin4Asked:
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Pete LongTechnical ConsultantCommented:
Hello techin4,


NETDOM RENAMECOMPUTER machine /NewName:new-name
          /UserD:user [/PasswordD:[password | *]]
          [/UserO:user [/PasswordO:[password | *]]]
          [/Force]
          [/REBoot[:Time in seconds]]


Regards,

PeteLong
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tribalostCommented:
Right Click on your My Computer Icon or go to Control Panel >> System and under the Computer Name tab you can change it there.
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techin4Author Commented:
Thanks tribalost but I dont want to change it that way. Inside the registry, I saw 2 folders with 'active folder name' and 'computer name'. I basically want to add numbers next to the computer name. Example: Computer1-0123. The numbers after the computer name will just be for my reference to keep track of which pc is which. I tried adding numbers to it but I notice that when I add long numbers or dashes sometimes, the system would give me the "lsass error". I work in IT department and I need to tag the computers for our reference by just adding these numbers next to the computer name inside the registry but I never done this before. Thanks  
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slam69Commented:
use net dom.exe as described by pete long above
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Brian PiercePhotographerCommented:
You cannot just change the name in the registry - the machine will lose its trust with the domain if you do - You might not want to use NETDOM but its the only way to do it - other then renaming the machine manually - that will work.
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oks1977Commented:
It seems that according to MS KB, PeteLong is right. But it applies to Windows XP.

http://support.microsoft.com/default.aspx?scid=kb;en-us;298593&sd=tech
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Pete LongTechnical ConsultantCommented:
ThanQ
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