Smiles on textBox

Hi,

In adobe flash actionscript 3.0 I want to create a chatting text application. I need to insert smiles inside the text box.

I want the output on the text field like this "Hi how are you?" how to do this?

When i try htmlText :

txt.htmlText="hi"+"<img src='http://findicons.com/files/icons/2103/discovery/32/face_smile.png'>"+"how are you?"

Its working but the smile is not between the words...how to fix it?

Or

I want to insert a movieclip inside a text box... and when i start type it should type after the movieclip. How to do this.

Thanks,

Siva