SP3 UxTheme Patcher

Not all XP themes you download from the Internet run on your computer without a glitch. Some of them only work partially, for example desktop background and icons, while others don't work at all. That is because Microsoft protects their branding by adding digital signatures to all officially agreed themes.
SP3 UxTheme Patcher comes to the rescue of the XP theme fan developer's community by removing this protection. The application unlocks full XP theme customization by automatically replacing the uxtheme.dll located in the Windows/System32 folder.

Easy-to-configure settings

All you have to do is run the basic installer and then restart the machine. It's that simple. No system messages, no complicated file search, and no manual file replacement are experienced throughout the entire process.
Despite all that, we strongly recommend to make a backup of the uxtheme.dll file before installing the application, and eventually a restore point. This is highly advisable since if you encounter any post installation issues, such as black screens, logon problems, error messages, you should have the possibility to restore the original file.

Performance

We have tested it on three different themes and only got a black screen on one of them while trying to open the start menu. Other than that, it works just fine.

Bottom line

To sum it up, SP3 UxTheme Patcher gives you the freedom to apply fresh looks to the operating system, changing most of the graphical user interface elements, from menus to fonts. SP3 UxTheme Patcher only works on Windows XP systems updated with Service Pack 3.