yeap, go to delta scripts, http://www.deltascripts.com/phpclassifieds/
I have a friend of mine who wants to do a local auto classified site, so he is having me configure the delta scripts one, it's pretty easy to do if you are knowledgable in PHP, if you wanna see how easy it is to configure take a look at the one I am doing ( www.pajdesign.com/autolands/
) and compare it to the demo version of the one on delta scripts.
P.S, the only issue I had is with spelling. The designer of the php classified is Norwegian I think so some of the english is a little poor.