I watched HellJumper's new beta import guide and am interested in starting modelling. I recently started but I don't know where to put the mdl decompiler

the read me states (Hooche's fixed version):
Place "MDL Decompiler Fixed.exe" in "C:\Program Files (x86)\Steam\steamapps\***user_name***\sourcesdk\bin\ep1\bin"
If you are missing MFC71.DLL and getting error messages unpack mfc71.rar to the same location as "MDL Decompiler Fixed.exe"

but I don't have "user_name" folder
from my understanding all the content in "user_name" folder was moved to the "common" folder from the steam pipe update.

and since I can't really use mdl decompiler I haven't started modelling yet. Does anyone know where to put "MDL Decompiler Fixed.exe" and "mfc71.rar"?

Any help would be greatly appreciated.