did u try to access to :

modules/classifieds/addlisting.php?cid=1

I think u need to adjust module settings.

Sorry guys, but you need to be logged in to add a listing. You will find that many parts will not work without a user ID, and in this case a category id. That's the way all my modules are.

I will repeat what I said on my site.
All reputable websites DO NOT allow anonymous users to add anything, even this site you need to be registered, there are many reasons for this. You may be able to hack the module to work with non registered users, it will probably not be easy, and I do not support this. I'm sorry but thats the way it is.

Thanks,

John