Roku HD Player (N1100) "history com authorized enter code" Questions

...history.com/authorize, but can't find place to enter my code given on screen. Go to Authenticated Channel Help at Roku website and select History Channel. Click on this link: Authenticated Channels ...

went into history channel and they asked for paswordwhat do i put down On a computer go to www.history.com/authorize and enter the code that is on the TV screen.