Bit trickier. No letters to start you off, but I will tell you that 20 is one of the two things you are looking for.
Extract the password using 20,10,4,1,15,1,1,11,12 and use that (UPPERCASE) to open the file on the related web page.
Many thanks to Coolhorse for letting me pinch some ideas from him for this cache.
This little series has had a good long life but it is now rather tired, it will be archived sometime after 30th June to free up the space for someone else.However should you want to adopt it please contact me.