A small but fantastic change in Windows 7 is that it officially supports changing of logon background screens. The only way to do it however, is through a registry hack, that is until now. Windows 7 Logon Screen Editor eliminates the hassles of editing registry and changing file names. All you have to do is click “Set Background” and select a picture. To test the new screen simply click on the Test button.
Windows 7 Logon Screen Editor also includes a few extra customization tricks. Click on the “+” button to change the shadow and button transparency settings.
Reverting back to the original logon background is easy too. Just click Default Background.