LOL- Take him in and have him get trimmed! Trust me... DH and I attempted to Groom Peanut-
http://www.yorkietalk.com/forums/gen...ed-peanut.html
There is the thread! It is much harder than it looks TRUST ME- I know you are just wanting to "trim" but unless you want to always trim him and keep up on it I would leave it to the professionals