I have a process that produces letters for clients in PDF format. All these letters need to be printed and could possibly be more than 5000 of them. Does anyone know of a good tool that will allow me to print all these documents without seeing an instance of Adobe open on the desktop or the displaying the annoying print status dialog? I know you have to have some type of application open to print the document, but is there anyway of doing without actually seeing the application on the desktop open?