From Dizzy Monkey Design:
Dizzy Monkey DirectPrint sends your files directly to a Windows printer in RAW format. With many advanced configuration options, DirectPrint will directly print ZPL, PCL, PRN, TXT, PS and EPS (PostScript) files, and more. In fact, any device-dependent or text-based file that will be understood by your printer can now be easily printed. Includes support for automatic printing, command-line printing, printing from Windows context menus, and support for custom file type associations.