||Open the printer driver (see Opening the printer drivers).
||On the Paper or Paper/Quality tab, click Custom.
||On the Custom Paper Size window, type the name of the custom paper size.
||Type the paper-size length and width. If you type a size that is too small or too large, the driver adjusts the size to the minimum or maximum size that is allowed.
||If necessary, click the button to change the unit of measure between millimeters and inches.
||Click Close. The name that you saved appears in the paper-size list for future use.