tv in motion

Hey All, first post to forum but have been an avid reader for ages getting loads of useful info. Currently own a 2002 X5 in uk which still has mkIII Sat Nav and analogue TV ( I know!!! ). I specialize in IT and fairly DIY competent around cars. My aim is to reprogram OBC so it will have TV in...

Can someone recommend a decent place/shop where I can install a TV in Motion (http://www.tv-in-motion.co.uk/bmw_tv_in_motion.html) device so that I can watch DVD while driving on my 2011 X5 35d (E70)? If there is an easier or another working solution to this problem, like recoding, etc, I'd...