Printing

I need to schedule a powershell script in a SQL job.The powershell script should silently print pdf files from a UNC path to a network printer.I was able to print from command prompt (not silent printing) using this code.WORKING But Not printing Silently and prints only to the default printer:C:\Users\ic019084>"C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AcroRd32.exe" /t "D:\GP.pdfAny ideas are appreciated.Thanks