7Log is a simple to use, yet very powerful program that allows you to change the login screen background of your Windows 7. It installs the correct registry files, creates the necessary folders and sends your favorite .jpg images to become your login screen background. And if you want the original login back, its just a click away. But what makes this program better than any proprietary(i.e you have to pay for) program you can find, is that this program is open sourced! And programmers are free to edit the program any way they wish as long as they give me credit for the original coding.
Windows 7 Home Basic or higher(Windows 7 Starter will not work)
Microsoft .NET Workframe 4.0
About 209 MB of storage space