I've looked over the site and can't seem to find instructions for operating the pre-plus navigation that's in my 2000 A6. I can't seem to find any of the correct streets and many of the options that I see I can't access. I'm sure it's just operator error because otherwise this nav is useless. I might be spoiled by the other navigation units I have in other cars but this unit can't possibly be that worthless. Thanks for the help.