CB, here's what you do. When you're in the Quick Reply box at the bottom of a thread, there are 3 buttons in the bottom right-hand corner: Post Quick Reply, Go Advanced and Cancel.
1) Click Go Advanced.
A page opens that allows you to create and edit your post in more detail. There are editing buttons and other functions that you don't have access to when you use Quick Reply.
2) On the right hand side, look for the little panel with Smilies in it. Underneath, there should be a link that says More... Click the link.
Another page opens that shows all of the available Smilies.
3) Choose the one you want to add to your post, and click it. The image should appear wherever you placed your cursor.
You can move the smilie around within your post.
That should do it.
*Trinity