Yeah, I figured that out, and posted a 'real' reply today.
Okay, I made the change to the template, cleared the system cache, and tested by creating a new post. This is what I typed in the new post Your Message window:
Clicking on Preview Post these get displayed as smilies in the Your Message window, but are not converted to graphical smilies in the Preview window. I can live with that, unless you know why that occurs and how to prevent that as well.