Bored with the Windows default logon theme, if your testing Windows 7 then Tweaks.com Logon Changer for Windows 7 makes it easy to customize the logon screen background with just a few clicks.You can also revert back to the original theme just by clicking “Revert to Default Logon Screen” and the application will automatically uninstall all customizations.

Windows 7 Logon theme changer

3 Easy Steps :

1. Start the application,
2. Select the image that you want to set as the logon background and click “Test” to see how the logon would look.
3. Click “ Change Logon Theme”.

Works on Windows 7 build 7000+

Download Tweaks.com Logon Changer

• Link 1 -  Link 2