
Hi SueH,
I can't help you personally on the Yorkie front but welcome to Champ Dogs :)
You could try contacting the breed club(s) as they usually have a list of litters born or expected in the near future and you can be sure of being put in touch with a responsible breeder (one who has met the criteria for breed specific health tests etc). Try this link http://www.dogclub.co.uk/dogs/profile-york.php for some contact details.
Good luck, Teri
Edited to say I hate links - can't do them