Right-Click on the Smokeless Range icon on your desktop and select Open file location.
Navigate to LaserAmmo\Programs\OpenRange and copy the Backgrounds, Courses, Sounds, and Targets folders to a USB drive.
Once you have installed the Open Range on the new PC, follow the same instructions to navigate to the same folder LaserAmmo\Programs\OpenRange on the new PC and paste the folders you copied from the old PC. If you are asked if you want to overwrite the existing files select Yes.
Now run the Open Range and you should see your custom courses on the new PC.