Logon Message

Go to Stat and click on Run here type Regedit
Go to the following Registry Key
Hkey_Local_Machine \ Software \ Microsoft \ Windows Nt \  Currentversion \ Winlogon
Modify /     Here create value (String) Data type REG _SZ    named   Logon Prompt
Value Data (Here you can type the logon message such as well come
Exit from Registry and restart the computer