Babysitter Needed for my Children

We are looking for a great nanny for 1 child. At times he may have his 9-year-old sister at home with him but that will vary. We would prefer someone who could help out with light housekeeping and help with preschool/educational enrichment as much as possible. We would prefer a nanny who has their own car, who does not smoke, who is comfortable with pets and who is CPR certified.