Some users have contacts saved as CSV files (typically export from Gmail or other similar program or service) and would like to import them Samsung library so a .spb backup can be generated with Kies. Such csv to spb conversion seems to have been mainly useful for some older Samsung devices and nowadays you can also simply sync your contacts in Gmail with your Samsung device and connect your device to Kies, where you can work with the contacts.
Open CSV file Open SPB file