How to Run a DLL as an App Theme

1. Right-click on the shortcut icon for the application you want to change using your DLL file.
2. Click 'Properties.'
3. Click the 'Customize' tab.
4. Click the 'Change Icon' button.
5. Select 'Browse.' Click on your DLL file from its location on your computer. This will load all of the icons within the DLL into the Windows Explorer window you are now browsing. You can select a new icon to use for your application and click 'OK' to save your changes.