OK YOU HAVE TO GO TO THE DISK C: -PROGRAM FILES-NIRANS VIEWER-UNIINSTAL.BAT- A BLACK SCREEN WILL OPEN, BUT IS PREFERABLE IF YOU CLOSE EVERYOTHER WINDOW THAT HAS THE PROGRAM OPENED LIKE THE "COMPUTER" ONE. THE BLACK SCREEN WILL ASK YOU IF YOU SURE LIKE 5 TIMES ANSWER WITH A "Y" AND PRESS ENTER EVERY TIME IT ASKES YOU, IT WILL UNINSTALL.