This is a simple registry trick by which you can display your message at windows startup.You have to edit your registry.It will pop message just before a user is going to log on.Check the following steps
1.Go to your registry
2. Navigate to
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWinLogon
HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionWinLogon
Now create a new string Value in the right pane named LegalNoticeCaption and enter the value that you want to see in the Menu Bar. Now create another new string value and name it:
LegalNoticeText
LegalNoticeText
Now insert the message you want to display each time Windows startup
