Actually it is very simple...It may take a little time to learn the script, but if you put your head into it, it wouldn't take any longer then an hour or two to accomplish it. There was a thread at Scriptkeeper.com posted recently that could help you out. The address was
http://www.scriptkeeper.com/ubb/Forum14/HTML/003857.html. This actually replaced the preofile |register | etc.. links with images of the words. But you could easily a) just not put anything in its place, or b) use a 1x1 pixel image to replace it. the folder structure and the ubb title iamge will remain, but after looking at around the same places where you remove the links, you should be able to figure it out.