How to rotate banners ?

[bucks.ie]

I currently have a banner on my forum, please see in link below, its the e30auctions.com banner after the first post;

http://www.e30owners.com/forums/showthread.php?p=40193

What i want to do now is add two other banners to the same location so that the three of them will rotate every time a page is reloaded.

How would i do this ?

Cheers.

[Lynne]

Have you looked through the Mods forums? I'm always seeing tons of Rotating Banners mods bumped.