Ok for those who need answers - ask a question and I'll do my best to answer.
With respect to the previous offers to provide answers - sorry I had to curtail the thread - the wife was getting irritated at my giving away the answers for a competition - I think she should watch a christmas carol myself - so the offer is still open but you will have to reply to this thread only - I've just registered this to my personal web mail not to our regular e-mail.
Hotrocker the Ghan railway changed v. recently to a new route from adelaide to Darwin the real answer for 2 a) is adelainde to alice springs. You're correct for your answers to 16 c and d.
Cheers