Direct Registration
You can configure computers to use the KMS service without configuring DNS for auto-discovery. This is called "direct registration". Direct registration overrides DNS auto-discovery.
To manually configure a computer to use ITD's KMS service, log onto the computer as an administrator and enter the following command:
cscript slmgr.vbs -skms kms.ncsu.edu
Note: The slmgr.vbs script gets installed as part of Windows Vista. It resides in the C:\Windows\System32 directory.
Troubleshooting
See the Troubleshooting KMS Activation page for more information.