[Michael Morris]

I'm not quite sure of exactly what you're needing but can offer this pointer

If you're wanting the ads to refresh on a timed interval, you'll have to use javascript and put it in your $heading template. You should be able to find such a loader script online.

Now if you simply want a new add on each page load that can be done by generating a random number and using it to select ads, though that may not work for best.

On my own site we used to run PostNuke, which has an adbanner generator. We still use it - it's the only remnant of PostPuke we use. It counts how many times each ad is served up - this is important if you do like us and sell ads by a set # of exposures.

Anyway, IIRC there are a couple of ad scripts floating around here. Search for the phrase "ad banner" since searching for "ad" isn't allowed (it's less than 3 characters).