[HKEY_CLASSES_ROOT\creoFile] @="Creo Versioned File" "AppUserModelID"="PTC.Creo_Parametric” [HKEY_CLASSES_ROOT\creoFile\DefaultIcon] @="C:\\EngTools\\PTC/Creo 5.0.4.0/Parametric/install/nt/parametric.ico,0"  example of mixing / and \ [HKEY_CLASSES_ROOT\creoFile\Shell] [HKEY_CLASSES_ROOT\creoFile\Shell\Open] @="Open With Creo Parametric" [HKEY_CLASSES_ROOT\creoFile\Shell\Open\Command] @="\"C:\\EngTools\\PTC/_X X X_/Creo5/bin/cp5_start.exe\" \"%1\""  example of mixing and needing quotes; \"%1\" resolves to “%1” [HKEY_CLASSES_ROOT\.1] @="creoFile" [HKEY_CLASSES_ROOT\.2] @="creoFile" [HKEY_CLASSES_ROOT\.3] @="creoFile" [HKEY_CLASSES_ROOT\.4] @="creoFile"