In this video, you can see how to make a DOS program printing to all the installed Windows printers, including USB, Wi-Fi, Fax, PDF etc. The DOS printing problem: - Start the DOS EDIT program - Print the document to the printer on LPT1: - It doesn't work because EDIT cannot find an LPT1: printer (or port) To solve the problem: - Run the Printfil Setup program - Read and accept the license - The other options are ok in most cases - Now you're asked to configure Printfil - Default options usually