It will probably be difficult fo find a web site that features rental homes for the Russellville area. The best place to look would be in the two local newspapers, the Times Daily and the Courier Journal for classified listings. The Courier Journal is delivered weekly in the mail and the Times Daily can be picked up daily almost anywhere. If you live out of town you can look up their websites for the classified ads at:
Sometimes Realtors know of houses available for rent that are not being actively advertised. If you don't live locally now and you have any trouble accessing the rentals on the websites I'd be happy to scan and email you the current rental listings. You can contact me at: firstname.lastname@example.org.