Right next the the headline of a forum or a sumforum you can see a folder. I would like to add other icons and replace thos folders. How do i do that?

All the images are in the DesktopModules/ActiveForums/images directory. You can replace any of the images. However, they would get overwritten if you upgrade the module, so make a backup of the directory before and after you replace the images.

Thanks alot Ben