Teresa Ford has a longer explanation of how to deal with barking problems but for now here is a thread with her abbreviated instructions. You will see Teresa's instructions on the 10th and 12th post.
http://www.yorkietalk.com/forums/gen...p-barking.html
Any problem that entails training as the solution may seem impossible when you start, especially when it has gone on for a while. The hardest part, really is training yourself to be consistent in your methods and never lose patience. Almost all training of dogs first involves the training of the owner.