A printer driver causes a printer to print based on print conditions defined before printing starts and a print command asserted by a particular application, and a registry stores a plurality of different print conditions. The plural print conditions stored in the registry are linked to printer paper identification information. The printer driver searches the plural print conditions stored in the registry to find the print conditions corresponding to the same identification information as the printer paper identification information in the print command, changes the preset print conditions according to the found print conditions, and then causes the printer to print.