print to PostScript file
Below you'll find example steps in CorelDRAW in other applications steps may looks similar.
in File menu select Print

select printer "Fiery DocuColor 2000 v2.0" and click "Properties..."

in "Fiery Printing" tab choose SRA3 page size then click OK

in Separations tab unmark "Print separations"

in Prepress tab unmark all options

in PostScript tab check options as follows

in Misc tab check options as follows then click Apply

before printing check jour job in Print Preview

click Print - you will be asked for the filename then PostScript file generation will start