How to change the message on the XP logon dialog box

By default, the logon dialog box says "Enter a user name and password that is valid for this system." But you can make it say whatever you want, by editing the registry. As always, be careful and back up your registry first. Then here's how:

1. In your registry editor, navigate to HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon
2. In the right pane, double click an empty spot and choose New. Create a new REG_SZ (String) value and name it LogonPrompt.
3. Double click it and in the data value field, type whatever message you want to display.