Pfaff now make a machine that is WiFi it is called the creative icon, Husqvarna also make 2 with WiFi. They have been around for a couple of years now, you can send designs directly to the machines from your computer but you do have to put the files on to Mysewnet cloud, you can now do this from your iPad.
Which pfaff machine do you have? Does it use VP3 formatted files?