Your MMCS will not be useless ... the AirCon has no text as its all automatic. If u use the TVtuner imput like I have with a Video cable from a Creative Zen or iPod u don't need to press any buttons. Just the AV channel the very first time.
The only time u need the text is if u use the radio, tape or cd changer.
There is a guy in New Zealand that was selling the facelift disks on Trademe that was going to translate the pre-face if he got enough keen people.