Sharon> when you are in the post interface, there is a "Smilies Legend" link to the left of the box, in pale blue color. Click that link, and it will tell you what to type to make smilies.
basically, these are the (exactly) what you type to create different face:
:)
;)
:D
:(
:o
:eek:
.
.
.
these are the ones I use most, you can find more on the link to the left. Good luck!