Sorry to bump an old thread, but this is relevant to what I'm trying to do.
I'm trying to run a horizontal monitor for 1 client at 1920x1200 and a vertical monitor for 2 clients each at 1200x960.
I can position them fine, but the 2 clients on the vertical monitor are set to the wrong aspect ratio.
I would like to find a way for HotKeyNet to change the aspect ratio.

SetScreenResolution does not work because WoW does not recognize 1200x960 as a valid resolution (not sure why, my system properties sees it fine), and this function only accepts valid resolutions.

Did you ever put in a way to edit the config.wtf file, Freddie?

Thanks.