Babysitter Needed for my Children - Full-time / Part-time

We are looking for a great nanny for 2 children in Sudbury. Our older son will be in the town pre-school so we only need care for him on a half day a week plus any days school is closed. We would prefer someone who could help out with light housekeeping. We would prefer a nanny who has their own car, who does not smoke, who is comfortable with pets, and who is CPR certified. Advanced education in child care / learning a plus!