tv or satnav

Hello people, The TV screen this one below... How do you get it to work... been told it is a analog and needs to go digital to work... SatNav dont work as well... Could someone let me know how this works & what to do to make it work... Thank you!

Hope someone can help... If i was to put this head unit in my 2002 325, would it just work or would there be other equipment i would need? http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120599836262&_trksid=p2759.l1259 I currently have the BMW business unit with 6 disc changer in the...