Hi Glenda,
There's a Rodent Trader on the NSW Fancy Rat & Mouse Club web site:
http://pluto.beseen.com/boardroom/w/56040/

I got quite a few responses out of that when I put my own ad there and
I'm sure the fact that these rats are ex-labarotory will catch a lot
of people's attention. Good luck with finding them homes!

Megan