UPromote is a software utility to promote your NT server to an NT domain controller without re-installing the operating system. UPromote works by updating the system registry. To create a PDC it converts all local user accounts to global user accounts. To create a BDC it copies the user accounts from the PDC and then synchronizes the Security Identifier (SID) to match the PDC. To create a standalone server it converts all global user accounts to local user accounts. It does not modify any EXE or DLL files.