According to this Microsoft support article, the use of the
redircmp command should take effect immediately, and all computers joined to the domain after that command has been issued should land in your "newcomputerou" OU.
1.Log on with Domain Administrator credentials in the domain where the CN=computers container is being redirected.
2.Transition the domain to the Windows Server 2003 domain in the Active Directory Users and Computers snap-in (Dsa.msc) or in the Domains and Trusts (Domains.msc) snap-in.For more information about increasing the domain functional level, click the following article number to view the article in the Microsoft Knowledge Base:
322692 How to raise domain and forest functional levels in Windows Server 2003
3.Create the organizational unit container where you want computers that are created with earlier-version APIs to be located, if the desired organizational unit container does not already exist.
4.Run the Redircmp.exe file at a command prompt by using the following syntax, where container-dn is the distinguished name of the organizational unit that will become the default location for newly created computer objects that are created by down-level APIs:
redircmp container-dn container-dn
Redircmp.exe is installed in the %Systemroot%\System32 folder on Windows Server 2003-based or newer computers. For example, to change the default location for a computer that is created with earlier-version APIs such as Net User to the OU=mycomputers container in the CONTOSO.COM domain, use the following syntax: