Shouldnt be too hard, its probably in one of the template files, dont know exactly which one its in but I'm sure someone probably knows
if you're talking about instant graemlins use this
https://www.ubbdev.com/ubbcgi/ultimatebb.cgi?ubb=get_topic&f=20&t=000165 if you mean the post icons above the text field just add them to your icons dir naming them iconXX.gif with the xx starting from the last number in the current ones you have, just keep adding, if theyre size is odd it will probably mess up the formating of it so put the bigger icons last
probably public_edit_post.pl , public_new_topic_form.pl and, public_new_reply_forum.pl I think, not 100% but if I remember right its probably in there
not sure, would be nice to see someone do it though