4. on Command Line, my windows folder was in D:, so i typed 'D:' . (Usually is 'c:')
5. I acessed the folder with the files that I should substitute D:\Windows\System32\Config. To do that, I typed 'cd windows', then 'cd system32', then 'cd config'
I tried this except that in command prompt when I go to the C drive it doesn't list any files, DIR command shows it is empty. BUT in windows explorer it is of course filled with files including the windows directory.