NETDOM.exe (NT Resource Kit supplement 2, Win2K Support Tools)

Domain Manager - a whole bag of network management tools in one tool.

The syntax for NETDOM varies considerably between versions

In summary you can

  /JOINDOMAIN  /JOINWORKGROUP 
  /Add /DELETE a computer account
  (including BDC and resource domain computer accounts)
  /Query the secure channel of a resource domain or BDC
  /List the resource domain/BDCs in a domain
  /Edit trust relationships
  /Query the computer role of any domain member or BDC.

In Win2K only
  Move a workstation or member server (computer) to a new domain
  Rename/Reset a workstation or member server
  Verify or reset and synchronize TIME within a domain
  Resynchronize 'out of synch' domain controller`s 

Run NETDOM /? for full syntax - or look in the supplied WinHelp file.

"Between knowledge of what really exists and ignorance of what does not exist lies the domain of opinion. It is more obscure than knowledge, but clearer than ignorance" - Plato

Related Commands:

Q150493 - Join a Domain from the command line
Q104558 - Change NT Server Name
Q139055 - Change Computer Name without changing DNS
Q222525 - Create Computer Account