well if you followed them steps in should be in the .wine folder located in your home directory, by the name of "config" ..
and also judging by them steps it states :
Wine also needs a configuration file. Copy the file config from wine-YYYYMMDD/documentation/samples to $HOME/.wine.
so if it doesn't already exist then the above shows where you get a default copy ... and if that doesn't exist then you can go to the download section on frankscorner and grab winetools, and use it to set up your fake windows drive + config file .