This is an interesting topic and I, too, am getting an expen this weekend. Probably the Petsmart one from Wollfy's post. I am going to include this earlier thread of mine, because people give good advice about this and also because Tara (Tino and Bunny's mom) posted pics of her setup (post #21) which are so great I'm going to copy her. Good Luck
http://www.yorkietalk.com/forums/sho...7&page=1&pp=15