How do I revert back to Windows Logon Screen

Hi I used a program to change my Windows 7 Logon Screen to an image of my own. Now I want to revert back to the Windows Default one. I can't do this as when I click the revert button it doesn't undo my Logon Screen change. Is the any free program or registry hack that will enable me to do this.

Thanks in Advanced

  961 18:00 14 Nov 10

If you click on control panel from the start menu and then click on user accounts you should be able to do it from there

No, I mean the welcome screen background image.

I am tring the suggestions

Thanks for your advice. It worked. Back to the Windows Default Logon Screen

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