CWM hack is lame, it's THEIR smilies on a map, no custom ones. Don't bother. It even had a damn logo image of their site with link underneath.
To add Instant Graemlins, edit these files and just search for smile.gif to find the graemlins code:
public_common.pl (template)
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ubb_lib.cgi (cgi)
ubb_lib_posting.cgi (cgi)
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vars_wordlets_img.cgi (variables)