Thanks for the reply but this doesn't offer the flexibility we need, there are many file type to convert and a few we want to ignore. The application doesnt have the ability to convert .doc, .docx, .txt, .csv, .xls, .html etc... and ignore all the .tiff and .jpg files in one submission. The method you suggested would require us to specify each file type individually which is not ideal in our situation dealing with 60,000+ files. Our solution was to just ADD THE FOLDER, let the software convert everything it finds to PDF and then deal with the extra unwanted PDF's later.
Thanks