The Bullzip PDF Printer uses Ghostscript and won't work if it isn't installed as well. You can cause it to install with Bullzip by dropping the gslite.exe application in the same folder that the Bullzip installation file resides. Bullzip will detect the gslite.exe file and install it as well. I experienced that, while Bullzip installed silently, with the correct switches, gslite did show some files being copied. It didn't require user interaction, but the user might notice in a 10 second windows that something was happening on their workstation.
found info on this here ---> http://www.biopdf.com/guide/distributing_ghostscript.php