Extract and copy "Engine.ini" from .rar archive, into the %LOCALAPPDATA%\SilentHill2\Saved\Config\Windows\ replacing already existing file. If you dont know to find this folder, the quickest way to open this folder is: just copy %LOCALAPPDATA%\SilentHill2\Saved\Config\Windows\ and paste into the Windows Explorer address bar and press Enter. It will automatically open it for you