Okay

Make sure your new icons are .gif files. Also, try to make them about the same size as the current ones. The new icons need to have the same filenames as the current posting icons. So, they need to be called icon1.gif, icon2,gif etc. If you want to keep all the icons that come with the UBB, then just rename your new icons so they continue from the current ones. So, if the last Icon provided by the UBB is icon14.gif, then your new ones will be icon15.gif, icon16.gif etc.
Hope this helps!
