I have an HP Photosmart C4200 series printer that is plugged into my Airport Extreme. As I'm sure you all know, this allows me to print wirelessly from my Macbook. However, this is not also the case for my iPad. I know there are certain printers that are WiFi enabled or specifically sold as AirPrint printers, but is there an alternative to print to a network printer (as I have set up) from an iDevice without jailbreaking? Thanks!