Hello,
Few.
If you set Bullzip PDF Printer as the 'default printer' in
Start ->
Control Panel ->
Printers then you'll be able to right click the file, click
Print and the file will automatically print using the Bullzip PDF Printer.
Note that right clicking the file and clicking Print opens the file using the appropriate program and displays the print window automatically. The program runs, but in most cases, is hidden (sometimes the program will be visible), and automatically closes once the file has been printed.