I have downloaded David Fidler's Jan. 2nd CYYZ replacement for Waren Hudson's Jan. 1 update (Avsim - CYYZ/2002 Scenery) but find there is no readme or instruction on what to do with the file. Would much appreciate some direction.

It would seem that the Fidler *.txt file is a replacement for the original file called CYYZ.txt. Using the AFCAD program as per the Hudson package instructions, simply substitute the Fidler *.txt file.I'm guessing that Fidler has refined some of the data and since he couldn't make contact with Hudson, went ahead and released this version.

Okay, thanks. I am just starting to find my way with AFCAD but I will give that a try.