There is no reason to devote an entirely new thread to a subject that has been covered a hundred times. A quick search of 'Category icons' yields at least 6 threads that cover this subject, and not one of them says 'Do a search'.
The people who answer questions in this forum do not have an unlimited amount of time, and there is no reason to waste time on questions that have already been answered.
Oh, and Serra, you might want to read the forum rules about posting your X-cart version number in your signature. You don't have to search for that, I'll give you a direct link to it:
http://forum.x-cart.com/viewtopic.php?t=6489