This is a partial list websites with resources concerning Pet Therapy Programs.
Another good place to find a program is through your local Humane Society.
Alternative Solutions in Long Term Care:
http://www.activitytherapy.com/national.htm
Dogplay has information about pet therapy and groups you can join:
http://www.dogplay.com/Activities/Therapy/therapy.html
The open directory website has a lot of links to different websites:
http://www.dmoz.org/Recreation/Pets/Animal_Assisted_Therapy/
Therapy Dogs International:
Furry Friends Pet Assisted Therapy (this is where Dante started)
There are many more websites - but hopefully this will give you a place to start.