http://www.smileyxtra.co.uk/

This extension is very cool if you are active at forums! It gives you a drop-down menu with a bunch of categories and then it has a ton of smilies under each category ready to insert into a post. You can even preview the smilies before you post them.

thats a cool one, i had it before reinstalling xp again

If you're a smilies furum/blog person then this its a must have