Abstract: A system transmits computer data by converting and modulating the data into a sound file, allowing the sound file to be stored for later retrieval and transmission. The system includes a sound file creator for modulating input computer data and storing the data. In one embodiment the invention is used with a voice processing system, and can create data prompts, that are either stored or immediately transmitted to a screen telephone. The data prompts can include text and graphics for display on a remote screen telephone the connects to the voice processing system. The sound file creator uses a three layer communications protocol to translate the data into a data format, then modulates and equalizes the data for transmission over a telecommunications line. The data prompts are transmitted in response to a caller's inputs into the voice processing system.