Ideally you would have the banner slideshow in either flash or javascript. Flash preferred.
Then on your side (i.e. on the server side) you would use a random script generated in php or something similar. Of course it could all be done on the client side using javascript - but I wouldn't.
I am very much not a fan of phpAdsNew. On all but the smallest sites it is rather sluggish, and the code is very inefficient. Unfortunately I don't have any other free solutions for you either, though.
No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.