Sorry, the game you are playing is Sierra's point-and-click adventure game Conquests of the Longbow: The Adventures of Robin Hood. This forum is dedicated to (what I believe is) a tactical strategy game about Robin Hood by a different company. The only connection between the two games is a basis in the Robin Hood legends. You want to post your question in the Conquests... series forum.
(By the way, about the Nine Men's Morris game in Conquests of the Longbow: Try setting the game's arcade difficulty slider down to the lowest setting. Unlike with the game's actual action sequences, you will still be required to play Nine Men's Morris this way. However, your opponent will now play much more stupidly, making the game much easier. If you're having trouble understanding the rules of Nine Men's Morris, make sure to reread the documentation that comes with the game, available for download on GOG. You might also want to try Sierra's hint book, available for free, among other places, at sierragamers.com. Plus, there's plenty of online help.)