Check out: www.Rent.com also www.Realtor.com and click on the "rental" tab at the top.
Be careful if you decide to rent from an owner because many are in pre-foreclosure status.
It would not be unreasonable for you to ask to see a current mortgage statement to be sure they are paying on time. Also you should make sure you make your payments to the owner per the public records. There are some scammers who are renting out vacant properties they do not own.