i'd say go to my rollitup and check out the following.. i cnp'ed this from my rollitup page, so these settings are allowing me to see smileys et al, maybe you have something set up differently??
Miscellaneous Options
Message Editor Interface:
Enhanced Interface - Full WYSIWYG Editing
Basic Editor - A simple text box
Standard Editor - Extra formatting controls
When posting messages to the forums or other members, there are three interface types available to you. The simplest of these is a simple text box, while the last is a fully-fledged WYSIWYG editor, which allows you to format your text as you want it and see the results immediately.
Depending upon the capabilities of your web browser, you may not be able to use all of these options. If you experience problems when posting messages, try switching to a different interface type.