AdMentor is a totally free ad rotator script written entirely in ASP. No binary components are needed on the server ( hosts tend to charge you extra for it, if they even allow it at all ) and no super-power database engine either - just a simple Access database is what you need. / The AdMentor project started with the simple goal to be an easy to use replacement for the Ad Rotator that comes free with IIS. Now ( especially beginning with version 2.0 ) it has become a pretty advanced piece of ad software. / It lets you weight your banners - that is you can make some banners appear more often than other. It supports multiple banner sizes, by a construction we ( somewhat falsely ) calls banner farms. Typically you create one banner farm per advertising position on your page. You might have one position showing 468*60 banners, and another showing 88*31 buttons etc.