I have made a autoexec.cfg file but it is not being read.
I have noticed that under properties it is a text file and not a CFG file but I can't change this.
What am I doing wrong?
You have to enable windows to show file extentions, on any folder choose tools then folder options, then click the view tab at the top, and find the line that says hide file extentions(look in pic below) and uncheck it.