Re: Alfred Hitchcock [DVD] : but it says in red "no items requestable - request denied"
It looks like you were probably trying to request "Alfred Hitchcock [DVD] : 4 spine tingling films from the master of suspense," which contains the film "Jamaica Inn." This DVD belongs to Ralston's Baright Library and if you try requesting this item on-line, it will result in the message you describe. While Ralston shares a catalog with us and is a reciprocal library, it is not actually a part of the Omaha Public Library system.
You might want to try The Ultimate Hitchcock Collection [DVD], which we do own, or you may visit the Ralston Library, and establish an account there if you do not already possess an account with their library (free to OPL cardholders!).