Message Manager Lite - free Windows utility that lets you configure and display personalized message dialogs
With Message Manager Lite it will allow you to setup a message dialog to be displayed upon a network login. You can specify the text to be displayed, the image, the buttons (up to 9), and when to display the message. You can Load and Save a specific message from the configuration file. This means that with the command line option you can configure a message and make it appear in the network login, when users startup Windows, or even on a specified windows shortcut. The possibilities are endless with Message Manager Lite.