Disclosed is a printer driver which acquires a file in which a printing condition has been stored, creates a print job based on the file, and instructs printing. The driver includes a first function which reads out the printing condition stored in the file, a second function which determines whether the file has been acquired from an external apparatus, and a third function which, (1) when it has been determined that the file has been acquired from an external apparatus, (1-1) checks with a user whether to change the printing condition, (1-2) displays a screen for setting the printing condition, or (1-3) sets a default printing condition in the print job, and (2) when it has been determined that the file has not been acquired from an external apparatus, sets in the print job, the printing condition stored in the file as the printing condition for the file.