Command line parameter to suppress print dialog

Hi folks,

is it possible to run pdfcreator without displaying the printjobs dialog?
Is there any command line switch to supress it?

At the moment I try to automate the conversation of a doc into pdf within 2 steps:
1. print it to .ps
2. convert the ps to pdf using pdfcreator.exe /IF"inputfile" /OF"outputfile"

I already tried /silent

Thx,
Tom