Use module rwbanner, is very good module for banner.
Yes rw-banner is great for banner management I have test it locally on XOOPS 2.0.17.1 and it worked great. Think there was one problem with one of the bloack types, but the rest works great. Can Someone please take over this module, it has been a while with no updates. Am sure it can be improved also.
Is there a chance to create a module for this so I can define to which sites my users can connect using the same user and password. Of course one database would be used and then allow users to register and login from any of my sites.
What about supporting gif images, jpg is good but it limits users a bit causing users to convert their images, people don't have much time to do this or even the skills.