[SOLVED]Custom Stories Folder Missing Please Help!!

[EpiqueSauce]

I found the folder in the (not going to be accurate)
program files/ steam/ steamapps/ amnesia

Heres thing, now Im having a problem with adding full conversion mods.
I did everything from: downloading the rar. And extracting it. Then finally when I moved all the files into the custom stories folder I opened the file (I forgot the name, and I can't look it up because I am not at my computer at the moment) that opened a window that shows black and white letters, now according to the tutorial that would have started my custom story. Alas this was not the case as the window read "Error" and closed immediately.

I'd really appreciate a link to another custom stories tutorial