Mert miért is?
[HKEY_USERS\__SID__\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.bmp\OpenWithProgids]
"IrfanView.bmp"=hex(0):
Valamint:
[HKEY_CLASSES_ROOT\IrfanView.bmp\shell\open\command]
@="\"C:\\Program Files\\IrfanView\\i_view32.exe\" \"%1\""