you have to put the ad in ur banner ur self, then upload it and use the banner
thats wut i did when i used invisionfree. and look around in ur admic CP if ur running on v2 or above, there should be a tab up at the top that says: tools, in there i think theres a thingy that says banners. not sure, hoped that helped.(i was using the beta versions[given to me by a freind because he didnt want to gimme the full version] until i found out they were unstable.)
and i know this is very unlikely that you would do this, but may i have a copy of IPB?:ermm: