I have been using Windows 7 since RTM and I have to say that I am impressed. It seems quite solid and there have been many “that’s nice” moments.
One default that I have disliked is the logon wallpaper image. It is a bit, how do you say, ghey. I tried out a few methods of changing it involving manual resizing of images and registry editing and it all seemed a bit too hard for such a minor thing. Then I found Tweaks.com Logon Changer for Windows 7 and my life changed for the better. Within 2 minutes I had a beautiful background from my wallpaper folder and am already impressing everyone around me.
The process couldn’t be easier. You download the file, unzip it, and run the single executable file contained within. You press Change Logon Screen, choose your image, click Test, and voilà, you have a lovely new logon screen. If you ever change your mind, you can always run Logon Chnager and click the “Revert to Default Logon Screen” button and return to the factory setting.