Please add spaces between words: IfyourPCopenstheIV2Ifile,butit'sthewrongapplication,you'llneedtochangeyourWindowsregistryfileassociationsettings.Inotherwords,WindowsisassociatingIV2Ifileextensionswiththewrongsoftwareprogram.
If your PC opens the IV2I file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating IV2I file extensions with the wrong software program.