To search many of their listings directly you can look on http://www.chapelhillrent.com/.
Craigslist is great for rentals by the owner; and you can do a rent search on Realtor.com on a company website for those listed with realtors.
Meadowmont Realty of Chapel Hill, LLC
You can find samples of homes for rent here: http://www.nchomerentals.com/
Let me know if you'd like a recommendation of someone to work with.