How to add an Emicon in MSN:
1. Find the image you want as an emicon.
2. Right click with the mouse on the image and choose the option Save Picture As... or Save Image As... Keep note of where you save it.
3. Click on the emicon smiley in a MSN chat window and choose Show All...
4. Click Create and follow the instructions.
5. Your new icon can be found under the heading Custom emoticons.