Part-time Babysitter/ Nanny needed for weekdays

I've been placed on medical bedrest due to a high risk pregnancy and am looking for a temporary (@ 2 weeks) part-time babysitter/ nanny for weekdays to watch our 2 1/2 yr. old son. Hours would be from 9:00-12:30 (weekdays). This job could turn into a more permanent one as we will be looking for a part-time "mother's helper" or nanny (weekdays only) once the twins are born in January. We are looking for an English speaking woman (college students welcome) who can go swimming, to the park, etc., and keep our toddler busy!

References will be needed.