A system outputs image data created by a computer apparatus to an image forming apparatus and performs a print processing, the computer apparatus having a data conversion unit to convert, when image data created by a data creation unit is outputted to the image forming apparatus and the print processing is performed, the image data into print data based on a previously set printing condition, a dialog image creation unit to create a dialog image including a print setting screen for setting the printing condition and a confirmation screen for enabling the set printing condition to be confirmed for each item, a display unit to display the dialog image, and a display change unit to change a display order of plural setting items displayed on the confirmation screen based on an operation of a user, and the image forming apparatus includes a printer that can perform the print processing in accordance with the set printing condition.