REGEDIT4

[HKEY_CURRENT_USER\Software\HomeAP\Tools]
"Data Backup"="\\windows\\backup.exe"

[HKEY_CLASSES_ROOT\.dbk]
@="backupfile"

[HKEY_CLASSES_ROOT\backupfile\DefaultIcon]
@="backup.exe,-102"

[HKEY_CLASSES_ROOT\backupfile\Shell\Open\Command]
@="backup.exe """%%1"

