Update OKI C711 laser printer to print on roll to roll (continuous media)

OKI C711 prints on banners until 1.3 meters of length. I need some modification (I don´t know if it´s firmware/software, new hardware or both) to make it print on continuos media from multitpurpose tray. Please just send bid if you understood the need and knows what i am talking about. I don´t need help to configure driver, as this option to print "on continuous media" doens´t exist on standard driver!