1. 
   1
   Open notepad by going to Start> All Programs> Accessories> Notepad. Vista and 7 users can just type "notepad", without quotes, into the start menu and hit enter
   
   
2. 2
   Copy the following code:

   :FAIL
                  echo Invalid password
                  goto :end
                  :end
   
3. 


               :A
               echo enter password to activate programme
               set/p "pass=>"
               if NOT %pass%== passwordhere goto :FAIL

1. At the end of your program, you need to add: