tested my code for the message icon thingy. had to change a couple words but it works fine. you can see it on my site. only rewrote the reply page, so edit and new topic won't work. if you go reply you can see it. it works in forumdisplay and ubb_libray2.pl just fine. had to remove only 2 words and add a one word to each file.
this would work fine with your cp addon that you made and would still be able to use your default icon chooser thingy.
you can name em anything you want. i didn't bother renaming them so you'll see icon1, icon2, etc. I did upload an icon called a.gif so you could see that it does read the name. you it converts the spaces and alphabetizes the icons in the dropdown. you could remove that if you didn't like it. only one line of code.
the hack is no longer and is as easy to install as the ubbbuttons hack.
it loads the defaul icon. on an edit it would load the picked icon, and have the dropdown selected to the right item. works fine with the preview button. check it out.
http://heywebdesign.hypermart.net/ubb/Forum1/HTML/000027.html