Hmmm... if your dog isn't a "barker" to begin with, it probably won't be later. My dog has been very verbal from the minute we picked him up!!
As for info on bark collars:
http://www.yorkietalk.com/forums/sho...ht=bark+collar
There was a thread on it earlier, so you can look there or just do a search on here for them.
Good luck keeping your little one quiet!!