In your quick reply box, there is an icon in the top middle with a smiley face. Click on that and there are quite a few.
That's before you click reply. After you've clicked on post quick reply there's a bar above where you type (where you link pics and videos), there's a smiley face there you can click on to choose an emoticon.
Pup.. Click setting top right..scroll down, list on left-hand side, click on General Settings.... Scroll down until you find, as below, make sure the Enhanced is ON, then save... I think, good luck.. Miscellaneous Options <label style="display: block; margin-bottom: 2px; width: 212px; float: left; ">Message Editor Interface:</label> <label for="rb_vbcode2" style="display: block; margin-bottom: auto; width: auto; float: none; margin-left: 0px; "><input type="radio" name="showvbcode" id="rb_vbcode2" value="2" tabindex="1" checked="checked" style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; font-family: tahoma, Geneva, sans-serif; width: auto; "> Enhanced Interface - Full WYSIWYG Editing</label> <label for="rb_vbcode0" style="display: block; margin-bottom: auto; width: auto; float: none; margin-left: 0px; "><input type="radio" name="showvbcode" id="rb_vbcode0" value="0" tabindex="1" style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; font-family: tahoma, Geneva, sans-serif; width: auto; "> Basic Editor - A simple text box</label> <label for="rb_vbcode1" style="display: block; margin-bottom: auto; width: auto; float: none; margin-left: 0px; "><input type="radio" name="showvbcode" id="rb_vbcode1" value="1" tabindex="1" style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; font-family: tahoma, Geneva, sans-serif; width: auto; "> Standard Editor - Extra formatting controls</label> <label for="rb_vbcode1" style="display: block; margin-bottom: auto; width: auto; float: none; margin-left: 0px; "> </label>