Hi LeedsA3 and welcome - I'm relatively new here too and yes this is a good place to be. However may I suggest that you start by using search and look at e.g. http://www.navplus.us/forum/viewtopic.php?t=462 (Navplus quick links). I terms of buying a unit there is e.g. eBay, www.autosound24.de, or you you pm craigyb and ask if he has any available.