The Customizer 2000 EasyImport was developed at the time of release to run only on the following versions of Windows: Win 9x, Windows ME. I've downloaded the installer and completely finished the installation process on Windows 10 64bit while I've used Run As Administrator.
You can download it through Google, but be very careful as it was not developed to modify the items on Windows 10 and may cause serious damage when it comes to system functionality.