The "two dots" are called an "umlaut", haven't figured out the key command on a PC but on a Mac it's SUPER easy (Command U then Shift U). For a PC I just google it and cut and paste!!
I contacted Peter Jowett earlier this year as he was trying to find some people for a trip up there in Aug/Sept to write a new book (he placed an ad on Kijiji of all places). A trip with a former Park Warden and author would be absolutely AMAZING!! Google Nahanni on Kijiji and see if he is still looking for people to join him!!
Have a great trip, I'm jealous as hell! I'll have to wait a few more years to be able to afford a trip like that!!
http://calgary.kijiji.ca/c-community...AdIdZ207899591
P