CREATE YOUR OWN LOGON MESSAGE

Create Your Own Logon Message
1 Click start
    click run
    type regedit,
    then click ok!

2 In The registry editor, drill down to the following key:
    hklm\software\Microsoft\Windows NT\Current version\Winlogon.

3 Right click LegalNoticeCaption,
    click modify,
    Type: THIS IS NEXT TRICK,and then click ok!

4 Right click legalNoticeText,
    click modify, and then Close your message!

5 Restart Your Computer.

6 The message will appear every time you logon!