From the MicroStation Print dialog, choose Select Printer Driver Configuration File and select the printer driver of your choice.
Before using Map Finishing Print, the variable CS_PLTFILES must be defined to a folder of your choice. This folder will be used to place temporary files that are used to create the print file.
Also un-check the Print to File box, then select the desired Printer from the list. This printer must be capable of printing postcript files.