jumpstartme2 - I'm running Firefox 1.5.0.1 and it works fine for me. If you right-click within a message box you should see an option on the dropdown that says "Smiley Xtra 4" and when you mouse over that there's a "Show/Hide Smiley Xtra Sidebar" which gives you access to all the smileys when you click it.

The liver is evil - It must be punished.